REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Saturday, 23 February 2019

PANASONIC TC-P50/42X1 - TC-P50/42C1 SERVICE HELP

PANASONIC TC-P50/42X1 - TC-P50/42C1 SERVICE HELP

PRINTED CIRCUIT BOARDS AND FUNCTIONS

BOARD NAME  =>  FUNCTION  =>  PART NUMBER
  • P  =>  POWER SUPPLY  => [LSEP1279UNHB]
  • A  =>  DC->DC CONVERTER, TUNER, SPEAKER OUT, AV TERMINAL, AV SWITCH, DIGITAL SIGNAL PROCESSOR, SYSTEM MPU, HDMI SWITCH, SEIENE 3LV, FORMAT CONVERTER, PLASMA AL, SUB-FIELD PROCESSOR  => [TXN/A1EPUUS]
  • K  =>  REMOTE RECEIVER, POWER LED, C.A.T.S SENSOR  => [TNPA4871S]
  • S  => POWER SWITCH  => [TNPA4873S].
  • GK  =>  KEY SWITCH  => [TNPA4874S].
  • C1  => DATA DRIVER (LOWER RIGHT)  => [TXNC11EPUU]
  • C2  => DATA DRIVER (LOWER CENTER)  => [TXNC21EPUU]
  • C3  =>  DATA DRIVER 9LOWER LEFT)  => [TXNC31EPUU].
  • SC  =>  SCAN DRIVE  => [TXNSC1EPUU].
  • SS  =>  SUSTAIN DRIVE  => [TXNSS1EPUU].
  • SS2  =>  SUSTAIN OUT (LOWER)  => [TNPA4809S].
  • SU  => SCAN OUT (UPPER) => [TXNSU1EPUU] "This board is Non-serviceable.  SU board should be exchanged for service".
  • SD  =>  SCAN OUT (LOWER)  => [TXNSD1EPUU]. " This board is Non-serviceable.  SD board should be exchanged for service".
TROUBLES CAUSED BY BOARDS.
  • Trouble at the Upper or Lower half  =>  SU | SD board.
  • Horizontal line (upper or Lower side)  => SU | SD  baord or PDP panel.
  • Trouble at Left | Center | Right part (42":  Left or Right half)  => C1-C3 baord.  
  • Vertical line (Width is same as FPC)  =>  C | A boards or PDP panel.
  • Vertical line (Width is narrower than FPC)  =>  PDP Panel.
  • Regularly bar (vertical)  =>  A Board.
TEST PATTERN
  • Test pattern is helpful to find the defective parts.  If we can see the picture problem all over the screen (Picture Noise, Full Vertical Line, Abnormal color), can find signal processing problem or panel phosphor problem by using test pattern. 
TO ENTER TEST PATTERN (To enter Service Mode)
  • Press the [Volume -ve] button on the TV set, and press 'Info" button on the remote control [3] times at same time.  
  • The service mode window will appear.
  • In this mode, select "Aging.
  • Test pattern will appear. 
  • Press [3] button on the remote control to select the Test pattern Mode to Forward.
  • Press [4] button on the remote control to select the Test pattern Mode to Reverse.
Posted By: FRANK at 02:45
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