Plasma Repair Answers





                 
 
The    basic  idea  of plasma display is to illuminate a colored  gas substance to form an  image.  What  you   see  on   the  screen is  burning  gas  between   two  pieces of glass. The  gas    substance is   called   neon   or    xenon.   Average  estimates  for  the screen  to  last  is  40,000 to 60,000  hours.  The  plasma  screen   (PDP)   contains a complex  structure  which  has millions and  millions  of   colored pixels. Each   pixel  is  powered     by   tiny  electrodes  and  has  its  own gas  and color .You  all  know  the  daylight  fluorescent  bulbs  you  use     in  your  house  .Just  imaging  millions   of  them   inside  in  your  plasma  screen. Each  one  controlled  by  brightness and  color .   That  is  what  your  plasma  screen  is.



    

Plasma TV problems



 
   Usually plasma TV problems start with the screen. If   the plasma screen is broken or crashed, it's  not  repairable any  more . It   needs a  new  plasma  screen  replacement,  which may cost you  more  then the plasma TV  itself. ( new screen run ..2 -3k in real  life .)   Budget   management  !!!   Protection  front  screen   (glass on  front) can  be  easily replaced and not so  expensive as  PDP  panel  behind it. If  you have just  protection  screen   damage  your screen(PDP   panel) will  work   without  any  problem  . Plasma  screen   contains   -  aluminum  base and   two pieces  of  glass  with  gas   between  them  (  gas  inside   not  rechargeable ).  Pixels  with  gas  , controlled  by  small  electrodes .  Each pixel  contains  3  colored   sub pixels  : they  are   green,  blue  and   red.  Plasma  screen  works  in   2  steps:
---          gas  ignition
---          picture  development

     IGNITION     -     power  supply >logic  control >  Z  or   X  sustain,> screen
     PICTURE  DEVELOPMENT       -      power  supply>,video  control  board  or  scaler  > ,logic  control   board>y  sustain > x  sustain > buffer boards  >screen



  Common   problems  with  plasma    panels   -   electrodes  damage    inside,  change  gas    parameters,    drivers  on  ribbon  connectors   damage.

                        TYPICAL  bad  PLASMA  SCREEN  symptoms


  1   Flashing  red  dots  or  pixels  on  the  screen  when  it  is  cold  (after  warm  up  it  goes  away  ) -  bad  screen
  2     distorted  colors  on  part  of  the  screen  -  LEFT  OR  RIGHT  CORNER -BAD  SCREEN
  3    COLORED   VERTICAL  LINES  ON  PICTURE
  4   flashing  red  dots  on  some  part  of  the  screen
 

90%  SCREEN  PROBLEMS   -  NOT  REPAIRABLE
10%  ON  PANELS  42V6  AND  42V5 (YOU  HAVE  a  CHANCE)



Burn-in image:

 
   This is an Image you can see on top of  the normal picture. It's  usually  displayed as dark lines or a dark area on the  screen.  Burn-in image  developers: TV in-service in  airports,  libraries, restaurants,  hotels, security  networks,  bars,  all  public  places. If your plasma  TV  displays  an  image  that's  not  moving (static image)  for a  long  time,  it  will  develop  burn-in  spots.  This  issue  is not  repairable  and  you  will  need a  new  screen  (PDP panel)  . That's  why  for all  those  restaurants,  bars,  and public places, it's better if  you  use an LCD    type TV, not a  plasma. For  example, a  Panasonic  plasma  TV   was in  a King   County  bar  for   6 months on  a  sport  channel and   it  developed a  burn-in   sport  channel   image.   The  estimated cost  for  this  type  of problem  would  be  $2,500.00.  Be smart  and  save  your  money !!!!


Vertical or horizontal lines or bars - 2-3" wide:

 
  There is 60% of chance you will need a new screen. The problem  you  may  have  is dead  driver  (part of a screen) or  poor connection  between plasma glass and ribbon  wire connector.  There is some solution for it but not for long  time. PDP panel  and  address driver on  it  not separated. If  one  of  26-40  drivers  is  going out,  you need  new screen. It is a  real  question   why   manufacturers   don't    separate expensive  PDP   panel ($2000  and  more)  and   $40 driver  IC  on   it. It  is easier  to  replace  a small $40 part  than  the  entire screen. So far  they  just  ignore   this  issue.   Future   plasma   panel  will  be  aluminum  + glass  + gas   only.(  no   more   drivers  on  it )    Other  common  problem  with  lines  on  screen   --  buffer   boards , high   ammount  of  failure   for  these  boards  due  to  poor   electronic  design
 1-- voltage  needed  to  operate  controllers on  buffer   board  just   to  high  for  small   SMD IC
 ,2---  they  are   not   strong  enough  to  drive  address  electrode).  In   future  it  will  be   changed for  more  reliable  parts .

Other problems


 
Other problems: A plasma TV is  a  very  hard  working  device. It is working  harder than any TV  that  has been  built before, and as a  result - it produces a  lot of  heat. 75% of  technical problems  in  our shop on plasma TV's  are  caused by overheating   problems. If   there is no active cooling   system, most   of  them  die  in  the  first 3-6   years. Always   ask at   the   store before buying    if   there is a cooling   system   inside. No  cooling fans inside   = no  long    life. That is a major  rule   about plasma TV.   Just   some   advice from   real   experience: Company names that ignore   cooling system - PHILIPS,   DAEWOO, some  SONY models. A real   test   in shop -   PHILIPS   42 pf7220a/37.  After   10 hours  of  work   without cooling system, some of the  components on power supply  board  were  out of temperature  balance. Vs  voltage   changes up to  2 volts   plus   . This   may   lead  to   overheating    problem and  cause    other permanent   damages. How    long   will  it  last?    You   know.
Plasma with Cooling System
Plasma without Cooling System
 
  Power supply:  
      
The   most   hard working   board in a plasma TV, it develops   voltage to supply   all   components, high current + high voltage. Input fuse is 10 A. Not   so many   TV's  in  TV  history   use  input  fuse - 10 A. Very sensitive   for   input   AC   voltage  and  output  DC   voltage. It  is  a  good   idea  to  check   your   electric   outlet   before   you  hook  up  YOUR   plasma. Perfect  electric   connections   are   the second major   rule   for  plasma. A  real  example a   Sony   42"  plasma  was  in service  on sparking  electric plug  in  apartment.  The  result:  dead   power supply, wiped   EEPROM memory, and   a  repair  cost  of  $470. Save  your   money:
  ---don't   use   cheap   extension   cords,
   ---open   wires,
 ---  100-year-old  electric  outlets.
 Keep in  mind  that  plasma  needs  twice  as  much  input  current  as  any  TV  on market.
   Common  power  supply problems:
-   hard   to turn  on,
-   stops   working   after a  while,
-   does  not   turn on at   all,
 -  flashing   pixels   on screen.
 
 Logic control, X, Y sustain, buffer boards:  
    controls picture, fires the gas, and many others functions. Common problems include negative image, no image, vertical or horizontal stripes on picture, turns on and than turns off, and many more. Technically they are complitely new electronic devices, nothing before built to compare with.It is always better to relace both sustain boards on any models (on SONY,TOSHIBA,LG you must -  no choice).
 
  Care:
-   cooling system (if it's not installed by manufacturer)
-   good electric plugs
-   don't leave plasma on one channel for a long time (2-6 days)
-   magnetic fields does not affect on plasma screen like on older TV's
-   don't use plasma TV on the same electric line with   other   powerful units such    as
   vacuum,
   electric   motors,
   plasma   cutter ,
   welding   equipment.
 -   NO   ELECTRIC  GENERATORS  - ANY    TYPE    ANY   BRAND    (PLASMA        IS    VERY    SENSITIVE  TO    INPUT  AC    VOLTAGE) !!!!
 
  Major   brand   or "exotic"   brand   name?
   Major  companies   build  their  own   product,  their   own  components, and  have  their  own  electronic   design. They  have  experience  customer support.
     They   drive   electronic   industry forward.
     They   spend   money on a research.
     They know what   they doing.     "Exotic" companies  -  don't  (they do -  copy  and   paste!!!!!!)



                                         LED  TELEVISION  REPAIR

   THERE  IS  NO  BIG  DIFFERENCE  BETWEEN  LED  TV   AND       LCD  TV   REPAIR .   SAME  POWER   SUPPLY , MAIN  BOARD ,T-CON  AND   LCD  PANEL  ON  FRONT
   THEY  DON,T  USE  INVERTOR  BOARD  ANY  MORE   AND  CCFL  LAMPS  INSIDE  LIKE  IT  WAS  ON  LCD  TV .
 256  OR MORE  LED  DIODES  LIGHTS  UP  YOUR  LCD  SCREEN  INSTEAD  OF    6-10   CCFL  LAMPS.   YOU  GOT   BETTER  BALANCE   BETWEEN  BLACK   AND  WHITE  ON  PICTURE   AND  SMALLER  ELECTRIC  BILL.
 LED  TELEVISION  IS  SIMPLIFIED  VERSION  OF    LCD   TELEVISION  . DOES   NOT  REQUIRED   ANY  SPECIAL  KNOWLEDGE (  IF  YOU  ALREADY  KNOW  HOW   LCD  TV  WORKS).
USE   LESS  ENERGY  AND  HAS  A  LITTLE  FASTER  VIDEO PROCESSOR.
 
LCD  or  PLASMA?


 
Technically LCD.

-    no overheating problem
-    no burn in image problem
-    low electric bill
-    not so many hard working parts
-    proven technology
-    twice as light
     
                                      plasma   tv  failure  symptoms
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 no power                                                                           POWER SUPPLY
 hard to turn on                                                                              BOARD
 no power  light on front panel                                            STAND BY POWER
 turn on after 20 min                                                                BOARD
 turn on and immediately shots down
 flashing pixels on screen
 turn on but no video and sound



 negative image
 tv turns on and shots down in 2sec                                     X   or  Y   or    Z
 flashing pixels on screen
 dark image                                                                       SUSTAIN BOARDS
 has sound but no video
 screen goes black and then return to normal picture
 vertical color  lines on screen no video
 vertical color lines with video
 vertical bars on screen
 horizontal lines on the image 
 picture goes red after while



 just left part of screen working
 just right part of the screen is working                                  LOGIC CONTROL
 vertical and horizontal lines on screen
 part of screen not working
 some functions not working                                                       BOARD
 no video but has sound
 functions not working at all



 turns on and shots down no video ,no sound                        BUFFER BOARDS
 part of screen not working
 black vertical bars on screen
 smell burn
  changing  in  size  vertical colored  lines
  horizontal  lines  white   or  colored



 no video from one of the inputs
 no sound
 no video but has menu lettering on screen                       AUDIO / VIDEO MAIN
 some channels not working properly
 just '' snow '' on screen                                                            BOARD
   no video but has a gray colored  screen
 wan,t to  turn  off
  picture  distorted  after  while
   intermittent  sound
   wan,t  bring  the  menu  on  screen
  shots  down  for  no  reason
  
 




  dark image on part of the screen
   burn in image
     static image from previous seen channel or show                 PLASMA PANEL
 clears in few minutes

  turn on and shots down
 flashing  red  dots when  it  is  cold                                                           (PDP)
  intermittent change of colors or brightness
 
  

   Plasma   TV   contains  a  few   dangerous  voltages   that can  electricute   you   in   seconds .  v s   = 203 volts,v a =173 volts,   Don't   feel   like  you   can   walk   on  the  water , better pass  it   to experience   technicians,  there  is no   parts inside   need  your   attention  and   no   parts   easy   to replace.


                                          
                     


                                             

                                                         new !!!!

             Some   Real  
Repair  Cases  in   Real  Life                               in     our  Shop

            PLASMA   AND  LCD  TV   REPAIR   TIPS
 
                                       panasonic   42"   plasma REPAIR

   tv  turn  on  , got  picture  and  turn  off  in  5  seconds
  was  found -   line  +15  volt  from power  supply to  main  video  board  after  5  sec   overloading   and  send  power   supply  to  protection  mode.
  bad  left  speaker  (unusual  case,  one  in  6  years).


                                     panasonic  plasma  50"

  tv  works  on  HDMI input  only ,no others  input  ,front  panel  buttons not    working  at  all,  on  remote  control  on/off  only
   was  found - missing  software on internal  flash memory
   bad  tuner   board



                                            maxent  lcd  tv  26" REPAIR
  tv  turns  on  and  got  crazy  vertical  lines  on  the  screen
  was  found -  microprocessor on  main  board  loose  connections on bottom row
   solution  -  hot  air  soldering  station ( reballing)

                                      PIONEER  50"  PLASMA  REPAIR

                pioneer  50"  plasma  older  model  with  separate  receiver  box
      tv  turns on  and  got  bright green  flashing  screen
     was  found -  Y sustain  board  working  out  of  control
      bad  SMD   MOSFET  30n60



                                     Philips  42pf7220a/37    REPAIR

     tv  turns  on  and  off  in  2  seconds ,  no  picture  ,no  sound
     was  found   -  missing   Vs  voltage  from  power  supply
   bad  connection under  plastic  connector  c221
     

                              Element  32"   LCD  TV  REPAIR


   TV  TURNS  ON  ,no  video , no  sound
  was  found  -   +12 v  in  real  life  just  +8.5v  ,  +24v   just   15volt
    bad  optocouple  in  power   supply .

                              PHILIPS    PFL37XXXXXXX  LCD  TV   REPAIR


 tv  turns  on  ,got  picture  ,but  shots  down  for  no  reason  in  20-40  min
  found -   signal "turn  on /off  "develops  on  microprocessor for  no  reason
  bad  front  panel infrared sensor   board (SMD capacitors  are  leaking)

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                                            VIZIO  42"  LCD  TV  REPAIR

 MASTER  AND  SLAVE  INVERTOR  BLOWED UP  AFTER  FEW   DAYS(2-10)  BD9897 BLOWED  UP  4 TIMES  ON  SAME  TV   IN   7  DAYS
  FOUND    start  voltages   and  current  to  high  for  this  schematic  (poor  design)  ,CCFL lamps  changed internal  parameters  after   2  years of  work.(need a bit  more  current  to  start  and  run)
 CURE  ---- installation  2 resistors,1 capacitor  and  1 zener  diode  to  lower  start  current
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                         SONY       KDL-40V2500  lcd  tv  REPAIR
  
  Turns on   for   few  second  ,screen  lights  up  ,and  shots   down
  Found   bad   transformer  on  invertor   board (upper  board)
  new  transformer   solved  the  case.
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                       VIZIO  P42HDTV10A   plasma  tv  REPAIR

  No  picture  ,no  sound  ,screen  does not  lights  up
  Found   burned   yppd-j018c   on   y  sustain  board  and  open  fuse  4a
  new  IC   solved  the  case 
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                        VIZIO  GV42L  HDTV   LCD  TV   REPAIR

  no  picture  ,no  sound
   bad  main  board
  changing  ic  u11  solved  the  problem

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                           HITACHI   42HDT52A  REPAIR

  doesn,t  turn  on
   bad  ja05958  main  board
  changing  ic  i106  solved  the  problem

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                                   LG   42"   LCD  TV REPAIR

    has  video,  no  sound
  not  responding  to  remote  control  and  front  panel  buttons
   responding  when  you  push  remote  control  and  front  panel  button     same  time
   bad  infrared sensor (killed  by  WINDEX using  to  clean  the  screen)
  changing  IR sensor  +  restart  factory sound  settings  in  service  menu  solved  the  problem

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                            POLAROID   46"  LCD  TV REPAIR
no  power
 found  blown  capacitors  in  power  supply +   bad   3.3v  voltage  regulator  on  main  board   +    5v  switching  SMD  MOSFET  on  main  board
 after  change  -  life  is  normal  again .

                                          
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                                   VIZIO    P50HDTV10A   REPAIR

powers on ,has  sound  ,no   picture
on   y  sus  board   found  dead   yppd-016c  integrated  ic
all  fuses  -ok
changing  IC  solved  the  case

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                               SONY   46  "  LCD    4100  MODEL   REPAIR


  POWERS  ON,  NO  SOUND  ,NO  VIDEO  ,BACKLIGHT  IS   OK
  FOUND  -   WHEN  YOU  UNPLUG  ONE  OF  RIBBON  WIRES   GOES  TO  LCD  SCREEN  FROM  LCD  CONTROL  BOARD
TV  SHOWS  THE  PICTURE  BUT  HALF  OF  SCREEN
  WHEN  YOU  PLUG  IT  BACK   PICTURE   SHOTS  DOWN  COMPLETELY
  DEAD  SCREEN  (NOT  WORTH  TO  FIX  IT)
 LOW QUALITY SCREEN  DESIGN
 OFTEN SCREEN  PROBLEMS   - THAT  IS A  SONY

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case  today  10.24.2010                  DELL   W4201CHD  REPAIR


POWERS  ON   BUT   NO  PICTURE
FOUND ---     SHORTED   TOP   BUFFER   BOARD,  Y  SUS  BOARD  NOT  WORKING  EITHER
CHANGING   TOP  BUFFER  BOARD   +  ONE  MOSFET  ON   Y  SUS  BOARD
SOLVED  THE  PROBLEM

NO  ACTIVE  COOLING   SYSTEM   INSIDE  (POOR   DESIGN  +  NO  COOLING  SYSTEM
THIS   MODEL  WILL   WORK  NO  MORE  THAN  5  YEARS  (  Y SUS   WILL  AUTOMATICALY   DIED  IF  THERE  IS  ANY  PROBLEM  WITH  ONE  OF  THE  BUFFER   BOARDS    -  MY  OWN  OPINION )

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                       VIZIO    VP50  HDTV20A  REPAIR


TURNS  ON,  NO  PICTURE ,  SHOTS  DOWN  IN  25  SEC
  FOUND  ---   2   BUFFER   BOARDS  (TOP  AND  BOTTOM)  SHORTED
   PAY  ATTENTION   ON  BUFFER   BOARDS  ON THIS   MODEL !!!!!!!!!!!!!!
 80%  OF  PROBLEMS   ON  THIS  MODEL  ---   BUFFER  BOARDS
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            POLAROID     FLM-3232  REPAIR

 TURNS  ON,  SCREEN   BLACK ,   NO   VIDEO
 FOUND  -   ON  MAIN   BOARD     VOLTAGE     1.8  VOLT   FOR  MICROPROCESSOR
  IS    1.25  VOLT  ONLY
  CHANGING    +   1.8  VOLT  REGULATOR  ON   MAIN   BOARD   (AS117)   SOLVED   THE  PROBLEM

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                            HITACHI    55HDT52   REPAIR


   TURNS   ON  ,  NO  PICTURE 
   FOUND   -  MISSING   Vs   AND  Va    from   power  supply
   changing   50n50   mosfet    and   2.2   ohm   resistor   in  power   supply   solved   the        problem 

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                                    SHARP   26"  LCD   LC-26SB24U  REPAIR


   SOMETIME  WORKS ,SOMETIME  NO  POWER  ,NO  VIDEO
  FOUND  -  MISSING ALL  VOLTAGES  FROM  POWER  SUPPLY   EXEPT  STAND BY +5V
  BAD  RELAY  5V  IN  POWER  SUPPLY

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                                            LG  PLASMA     50PC5D  REPAIR

   TURN  ON  ,NO  VIDEO  ,NO  SOUND ,  WILL  NOT  TURN  OFF
  FOUND  -   MAIN  BOARD   NOT   WORKING  PROPERLY  ( MISSING  +3.3V  voltage  regulator   FOR  HDMI  CONTROLLER)
  CHANGING   HDMI   MICROPROCESSOR / CONTROLLER  ON  MAIN  BOARD  SOLVED  THE  PROBLEM

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                                                        HITACHI   P50T501  REPAIR

  TURN  ON  AND  OFF  IN  2  SEC. NO  VIDEO  /NO  SOUND
   FOUND   -  BURN    M807(LOCATION)   IC  ON  ND60200-0047
   NEW  IC  3294F    SOLVED  THE  PROBLEM
 
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                                                 PHILIPS    42PF7220A/37  REPAIR


  TURN  ON  ,AFTER  2  SEC  -OFF ,NO  VIDEO /  NO  SOUND
   FOUND  ---   Y  SUS  SHORTED  (POWER   SUPPLY  GOES  TO  PROTECTION  MODE)
   CHANGING   C5041  ,D5022 ,Q5010  ON  Y  SUS  +  FOUR  IC  SN755867  ON 

LJ41-02760A     SOLVED  THE  PROBLEM


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                                                                sanyo

                                                    dp26648    26 "  lcd  tv  

  no  video  ,   has   background  light
  remove  all the   parts  and  reattached  cable   between   main   board  and  lcd  control  board  t-con    -  solved  the  problem

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                                                      Magnavox  32mf231d  REPAIR


  no  video  /  no  sound 
  after  testing --  found   power   supply  not   working
  transistor  10n80  in power   supply  shorted 
   after   replaced  10n80  mosfet   -  normal  performance

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                                                          Toshiba  42hp66  REPAIR


  no  video  /  has   sound 
  after   testing  -  not  working   z  sus  board  
  changing   yppd-c018c   ic   and  fuse   4a  on  it   solved  the  problem
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                                                            Vizio  vp422 hdtv10a

after  5- 10 min   no  picture  ,has  sound,no  menu,flashing  lines  only
  after  checking  - main   board  not  working  properly
we  install   main  board  from  vp423 hdtv10a   -works  perfect

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                                                         Vizio   gv47l  hdtv  10a  REPAIR

   intermittent  problem - sometime  it is  working  good
   sometime-  no  video, no  sound
   found  -  main  board  , u5 voltage  regulator  mps 1117   (1.8  volt)
   after   changing  u5  on  main  board  -  back  to the  life


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                                                     Vizio   lcd  tv  vx37l hdtv10a  REPAIR


    turn on , no video  ,vertical  lines  no   sound ,    wan,t  to turn off
    main  board  not   working
     open  fuse +12 volt  line  on  main  board , fmps1117  regulator on  main  board  drop   voltage to   2.1   volt instead  3.3 volt  (input  5  volt)
   after   changing  fuse   and  regulator  on  main  board  -  works  perfect


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                                      Vizio    p42 hdtv10a  REPAIR


   turn  on    ,has  video     .flashing  dots  all over  the screen ( milky way)
  adjustment   VSET  on  y  sus   -  works  but  50  %  of   dots  still there
   other  adjustments  on  y  sus  board  -- no  help at  all.
  changed   053b   y   sus  board    --  same   problem.
   changed   logic   control  -----   bingo  !!!!!!!!!!!!!!!!!!!!
    077b   logic  control   board  (all  smd  capacitors  on   logic  control   board   -  high  ESR.  )

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                                        TOSHIBA   42HP66   REPAIR


    turn  on    ,no  video  , some  changing  in  size  vertical colored  lines  ,
   one  of  the  driver  IC on  buffer  board  117a  extremely hot
  dead  buffer  117a  board
     changed  6871xxxx117a  buffer   board.
    tv  back  to  the  life

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                                      PANASONIC   TH-50PZ85U

   turn  on  , shots  down   in  3 sec  , 10 times light  on  front  panel
   bad  power  supply  -  FAMOUS  ETX2MM704MG
   MISSING  Vs  and  other  voltages
   i am not  going to show  this  time  all  problems  this  power  supply  has ,because  there are  people  making  money  on  fixing  it. We  respect  that . 
    But  this  time -  we  did  extreme "facelifting" way , you  can,t  see  it  anywhere in  internet. That  is  our  way  ,and  we  do  not  sell   that  . THIS  INFO  IS  FREE .But  you  have  to  be  a  electronics  repair  handyman .
  We  changed 
ETX2MM704MG   on  ETX2MM706NG  power  supply
Yes , it  is  completely    different  board  , but  has exactly  same  connectors  with  no  change ,and  706  is more  powerful  board  with  same  output  voltages   ans  sygnals.(no  need  to  adjust )  and  cheaper .
 
ETX2MM704MG  main  power  board   and  small  stand  by power  supply  were  removed  and  706ng (contains  two  board  on aluminum  chassis)  installed.
   it  is a little  bigger  in  size , you  have  to  modify couple  holders  to  tight  the  board.  We install  one extra  holder  to tight power  supply  to aluminum casing  of  plasma  panel .
 
  In  our  case  it  fits  perfect. all  wiring  connectors are  the  same
  Some  wires  got  to  short  to  reach  connectors  , but  we  always  can  just increase  them  in length .                     Soldering  skills  required !!!!!!!!!!!
  After  change  -  works  perfect . no  adjustment .
   We  hope  PANASONIC  can  and  will    install  706ng   power  supply   on  50"  plasmas  instead  704mg  .
  ready  project  picture      http://i1177.photobucket.com/albums/x359/torba67/IMG_0539.jpg
  model  th-50pz85u  with  installed  706ng  power  supply..




                                                         http://i1177.photobucket.com/albums/x359/torba67/IMG_0539.jpg


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                                               PANASONIC            TH-42PZ77U  REPAIR



             "   face lifting "   on      famous      power   supply  

ETX2MM681MF

     same  story   as   above   but   this   time   we  install   TNPA3911  POWER   SUPPLY   instead  

ETX2MM681MF

  wires  on   connector  p12  need  to  be  increase  in  length  ,rest  of  it  the  same
  connector  p9  need  modification
  screws  holders  need  to  be  modified  also
  same  voltages  ,same  control  signals
  if  you  do  not  have  etx2mm681mf  power   supply  you  can  do  tnpa3911.
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                                PANASONIC   TH-42PZ80U REPAIR


  NO  POWER     10  BLINKS
   DEAD   POWER   SUPPLY  LC0719-4001DC
   INSTEAD   LC0719-4001DC    WE  INSTALL  ETX2MM747AF  POWER   SUPPLY
 THIS  PROJECT   FOR  EXPIRIENCE   REPAIR  TECHS  ONLY
  P12   CONNECTOR  COMPLETLY MODIFIED
REST  OF  CONNECTORS   ARE    THE  SAME
  + 15  V  ,    +60V   WE  INJECT  IN  TO  P12  CONNECTOR
  USING  P35   CONNECTOR   ON  747  BOARD
  NO  ADJUSTMENT
  SAME  VOLTAGE
  SAME  CURRENT
  BOARD   HOLDERS  HAS  BEEN  MODIFIED  ALSO
      -------------------------------------------------------------------------------------------------------------------
                   
                        

                        Panasonic                                   TH-50PX600U  REPAIR


                 panasonic  power   board  ETXMM610MEF
  no  power  ,shots  down  in  2  seconds
      found   missing   Va   voltage
   instead  610mef   power   supply   we  install   TNPA3911  (SAME   VOLTAGE ,SAME  CONTROL   SIGNALS, SAME   CONNECTORS)
  NO  ADJUSTMENT  NEEDED.
   NEW  BOARD  NEED  TO  BE  UPSIDE  DOWN   AND  P12  CONNECTOR   NEED  EXTENTION   3-5 " ( TO SHORT)
  2  BOARD   HOLDERS  NEED  MODIFICATION.

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                                        VIZIO   VX37L HDTV10A REPAIR


     
      TV IS  ON  -  BLUE  SCREEN  FOR  2  SECONDS   AND  SHOTS  DOWN.
       FOUND---   ONE  OF  THE  CCFL  LAMPS   INSIDE  THE  SCREEN BURNED.
       AFTER  LAMP  CHANGE  -  WORKS  PERFECT
       TO KNOW  WICH  LAMP   IS BAD   YOU  HAVE  TO  SHOT DOWN   PROTECTION  ON  INVERTOR  BOARD    .(PIN 15  ON  IC  OZ9966SN   -   10-20 K   RESISTOR   TO GROUND)
    TURN  ON  ,AND YOU  WILL  SEE  BURNED  OR  BAD  LAMP .

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                                                    vizio VX42LHDTV10A REPAIR

              

-------------------------------------------------------------------------------------------------------------------- vizio VX42LHDTV10A no video , no sound
 found - missing 24 volt and 12 volt from power supply. original power supply DPS-283AP is dead.
DPS-283AP not available in shop , customer need it extremely fast . problem solved by installing DPS-319AP power supply from other model.
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                                                    VIZIO VX32L HDTV10A REPAIR



 VIZIO VX32L HDTV10A PICTURE-OK SOUND -OK
REMOTE CONTROL DOESN,T WORK .
FOUND - SHORTED SMD CAPACITOR 1 MKF ON INFRARED SENSOR BOARD. SOLVED BY REMOVING CAPACITOR FROM THE BOARD. --------------------------------------------------------------------------------------------
                                                       HITACHI   55HDT52 REPAIR


 Turn  on  and  shots   down   in  5   seconds
  found   blown  IC  M801   on  buffer  board  ND60200-0033
  SOLVED  by  changing  sn755866  IC  on   buffer   board

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                                               SAMSUNG  HP-S4253 REPAIR


  HORIZONTAL  LINES  ON   PICTURE ,sometimes   picture  -ok
  sometimes   - no  video
   found   blown   capacitor  c5065  on  Y  SUS board
  changing  capacitor  solved  the  problem
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       12.12.2011                                        VIZIO   L32 HDTV10A REPAIR


  No  power
  Power  supply  is  dead  DPS-199AP
  Cristmas  time -  customer   need  it  fast  ,  no  original  power   supply  in  shop
  install  FSP201-3M01  power  supply  solved  the  problem.
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                                             SAMSUNG   LN-R238WA REPAIR
  Redish  background  light  ,shadows  on  picture ,vertical  lines
  found  oxidation  on  LVDS  cable connectors (main   board   side)
  cleaning  connectors  on  t  con   and  main   board  and  LVDS  cable   solved  the  problem

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                                               VIEWSONIC   VX2835WM REPAIR

   NO  POWER,  no  blue  light  on  front
  original   PSM217-404-H-R  IS  DEAD  (HARD  TO  FIND)
  Install   DPS-210   POWER  SUPPLY  BRING  UNIT  BACK  TO  LIFE

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                                     PANASONIC   TH-P50G25  REPAIR

    POWERS ON  FOR  3 SECOND  AND  SHOTS  DOWN  WITH  4  BLINKING  LIGHT ON  FRONT PANEL

  FOUND  MOSFET  TRANSISTOR   Q547  ON  TNPA5081  SHORTED OUT

CHANGING   TNPA5081  Y  SUSTAIN  BOARD   SOLVED  THE  PROBLEM

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                                    SHARP    LC-32D43U  REPAIR

      NO  POWER  , NO  SIGNS  OF  LIFE

     FOUND  -  MISSING  STAND  BY  +5  VOLT  FROM  POWER  SUPPLY

     CHANGING  DPS-178AP  POWER   SUPPLY  SOLVED  THE  PROBLEM

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                                           LG   47LG70 REPAIR

   POWERS  ON  ,NO  VIDEO  HAS  SOUND

   FOUND  NOT  WORKIING  MASTER  INVERTOR  BOARD

  CHANGING  2  CAPACITORS,ONE  FUSE  AND  ONE   MOSFET  DRIVER  TRANSISTOR    ON  MASTER  INVERTOR  BOARD   SOLVED  THE  PROBLEM.

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                                                   SONY  KDL-32L4000  REPAIR

      NO  LIGHT  ON  FRONT  ,NO  POWER,  NO  VIDEO  ,NO  SOUND

    FOUND  ---   MISSING  DATA  FROM  EEPROM  (  NO  INFO  ON  LINE  I2C)

    CHANGING  MAIN  BOARD   SOLVED  THE  PROBLEM.

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                                          PANASONIC  TH-42PX75U  REPAIR

     SMALL  1X16"  VERTICAL  RED  LINE  ON  THE  PICTURE (LEFT PART)

   FOUND ---  BAD  DRIVER  IC   QWE34524123  ON  PLASMA  PANEL

   CHANGING  PLASMA  PANEL  SOLVED  THE  PROBLEM  .

   PLASMA  PANEL  COST  -----  $ 675 +  SHIPPING.

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    03.07.2012                                     SHARP    LC-32AV22U  REPAIR

  FOUR  TV,S  AT  THE  SAME  TIME  IN  OUR  SHOP  WITH  SAME  PROBLEMS----  GOOD  SOUND ,NO IMAGE   ONLY  VERTICAL  LINES  ON  SCREEN  ,SOMETHIME  AFTER  15  MINUTES  WARM  UP  STARTS  WORKING  PERFECTLY  FINE

  FOUND----  ON  ALL  FOUR - BAD  LCD  PANELS  (DEFECTIVE )

  DRIVER IC,S   ON  TOP  OF  THE  PANEL  OVERHEATING  AND  CAUSE   DAMAGE  TO  THE  LCD  PANEL

  ALL  TV,S   JUST  3-4  YEARS  OLD

  SHARP   LCD  PANELS  JUST  NOT  GOOD  AS DESCRIBED.

  LEFT  NOT  FIXED  DUE  TO  HIGH   LCD  PANEL  COST....

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                               SAMSUNG   HL-R7178W  REPAIR

  PICTURE  IS  BLACK  AND  WHITE  ONLY

  FOUND ---   BROKEN  COLOR  WHEEL

   AFTER  CHANGING COLOR  WHEEL  ---  LIFE  BACK  TO  NORMAL----

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                 WE  GOT  THIS  TV  FROM  ONE  OF  TV REPAIR  SHOPS  IN              WASHINGTON  STATE.

                                                           I LIKE  IT !!!!!

                                                        NICE  DESIGN !!!

                               

               Some  people  don,t know  how  to  even  open  back  cover .

                                                       Why  bother?                    

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                                      TOSHIBA  37HL17 REPAIR

                                                  37"   LCD   TV


       IT  WAS   FUNNIEST  REPAIR  PROJECT  OF  THIS  YEAR

                      BEST   OF  THE   BEST  !!!!!!!!!!!

    NO  PICTURE  ,NO  SOUND  ,TV DOESN,T TURN  ON

      LED  LIGHT  ON  FRONT  PANEL  FLASHES  3  TIMES

     AFTER  CHECKING  WE  FOUND  MAIN  BOARD  PE0361A  NOT  WORKING

                                                  (  FLASH MEMORY  IC 115 IS DEAD)

   SO ,WE  NEED  NEW  MAIN  BOARD  WHICH WE  DO NOT  HAVE .

   AFTER  LOOK  AROUND  WE  FOUND   TOSHIBA  65"  DLP  TV MODEL  USES  SAME   MAIN  BOARD.

   YOU  CAN  SAY ---- NO WAY!!!!!!!!!!!!!!

  YES  IT  IS  COMPLETLY  DIFERENT  TV  BY  AGE,  BY TECHNOLOGY , BY SIZE ,BY  EVERYTHING  !!!!!!!!!!!!!!!!!

   BUT  AFTER WE   INSTALL --------------    BIG  SURPRISE  ------- .IT  WORKS   AND  IT  WORKS  PERFECT  ALL FUNCTIONS  OK,VIDEO  - OK.

        BIGGEST SURPRISE  IN  MY  LONG  ELECTRONICS  REPAIR  PRACTICE.

           I   LOVE  TOSHIBA  -----  YOU  CAN  USE  MAIN  BOARD  FROM  DLP TV  65"  AND  USE  IT  FOR  LCD  TV  32" AND  37"  WITH  NO  PROBLEM.

          MAIN BOARD    PE0361A  V28A00043601 SAME  ON   37HL17   AND  65HM167

                                         TESTED    AND  PROVED   !!!!!!!!!!!!!!!!!!

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                         07.25.2013      SANYO  DP42849  shotdown  in  few  seconds

      TV  lights up   for   few   seconds   and  shots  down

       Found  ---    power  supply  dps-260lp  goes   to  protection  mode   for  no  reason

                           component  level  testing  --  nothing  bad  found.

     We  install  dps-260jp  from   vizio  lcd  tv  istead  of  original  DPS-260LP


                           dps-260jp 0500-0407-0810

                               REDESIGN   wires  required.

                                              works  perfect.

    photo 4180437043E04310440043004360435043D043804350091_zpse6defd01.jpg

        photo 4180437043E04310440043004360435043D043804350092_zps760b8bee.jpg
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                                   HITACHI   55HDT79  REPAIR

  POWERS  ON  ,NO PICTURE, HAS SOUND

Found   -  buffer  board  nd60200-0034   and  y  sus   board   nd60200-0032  shorted

  hard  to  find  those  parts.available   from  China  only.Process  of  repiar  took  3 weeks.

Trying  to  use  something instead  those  parts  -  failed.

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                                       VIZIO    VA320M   REPAIR

       Powers  on ,no  video  ,no  sound

 Found   unfunctional   main  board ,power   supply  - ok ,t con --ok, heating  flash  memory  on  main  board  restored  tv  for  short  period  of  time (1  to  8  hours). changing   main  board  solved  the  problem .

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                              Samsung   LN32B360 repair

  no power

 Supply/Back Light Inverter BN44-00289B not  working

  instead  original  board  we  install  

  proscan  32lb45q  inverter  ayl320801 board

   wires were redesigned ,rest  of  it  exactly  the  same (EVEN  MOUNTING HOLES)

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                                      TOSHIBA 42HL167  REPAIR

   No power  -  power  supply   not  working

   Original   power  supply  board  PE0306E  

  We   install  PE0450B BOARD ,connector  P804 need  to  be  install  too. Just remove  connector  from  old  pe0306  and  install  it  on  pe0450b  board.

   Works  perfect.

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                                         05.05.14  SAMSUNG  S4253  REPAIR

                          MANY  VERTICAL  LINES  ON THE  SCREEN

                                  OWNER  --  BIG CATS  LOVER

                               What can cats pee can do  to your plasma TV

            Needs   new  screen -- ribbon wire cable and vertical controller  on  it  damaged completly.

                                                                   

                                      PANASONIC   TC-P42C2  REPAIR CASE

                                                                    08.04.2014

            BLINKING  3  TIMES - SHOTS  DOWN  NO  PICTURE, NO SOUND

           THIS CASE -- FOR  ALL  THOSE  WHO IS  TRYING  TO  FIX  PANASONIC PLASMA  TV  BY  BLINKING  LIGHT ON  FRONT  BY  COUNTING  HOW  MANY  TIMES  IT IS  BLINKING --   DO  NOT  CONFUSE  YOURSELF. !!!!!

  BLINKING  SERVICE  LIGHT  DESIGNED  TO  HELP  ONLY !!!!  IN  TROUBLESHOOTING  PROCESS  .  IT  IS  NOT  ACCURATE  LIKE  MANY  PEOPLE   SAYING  ONLINE.

   FROM  OUR  EXPIRIENCE  --- BLINKING  PANASONIC SERVICE  LIGHT  HAS  50% ACCURACY  ON  OLDER  MODELS   AND  15%  ON  NEW MODELS.  BE  AWARE !!!!!

    FOUND  -  SHORT  VERTICAL  DRIVER  ON  PLASMA  PANEL (BUTOM  VERY  LEFT                       

TV  NEEDS  NEW  SCREEN.

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                                                     11/25/2014

                                       VIZIO  E422VLE  REPAIR

  PROBLEM -   NO  POWER.,NO YELLOW  LOGO LIGHT  ON  FRONT

   Power   supply  not   working , missing  all  voltages.(  VOLTAGE  REGULATOR  U101  IS  DEAD.)

  SOLUTION  -- ORIGINAL POWER  SUPPLY  BOARD  0500-0412-1220  HAS  BEEN  REPLACED  WITH FSP190-2PS02 0500-0405-1290  .

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                                SAMSUNG  PN50A550 REPAIR

                                                                 11.26.2014

  NO POWER.

   Power  board  bn44-00222a is  gone.(mosfets, termoresistors and  many other  components).

   desicion -   change  whole  board.

  We  don,t  have  a right  board.  Why  don,t we   install  BN44-00160A power  board ?

   Modification  of  connectors  CN803, CN804 , CN802  needed.

   Only  for  expirienced electronics   repair  technicians. !!!!!!!!!!

   All  voltages   and  sygnals  exactly  the  same.Just  some  connectors redesign  needed.

   And  it  works !!!!!!!!!!

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