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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Saturday 23 February 2019

PANASONIC - CT SERIES TVS SERVICE MODE ADJUSTMENTS

PANASONIC - CT SERIES TVs SERVICE MODE ADJUSTMENTS



APPLICABLE TO PANASONIC - CT-32HX40B_CT-32HX40CB_CT-36HX40B_CT-36HX40CB

TO ENTER SERVICE MODE [FACTORY MODE]


  • Quick Entry to Service Mode. [When minor adjustments need to be done to the electronic controls, the method of entering the serviceman mode without removal of the cabinet back is:
  1. Select 'Setup" icon and select 'Cable' mode.
  2. Select 'Timer' icon, and set 'Sleep Time' to 30 minutes.
  3. Press 'Action' twice to exit menus.
  4. Tune to channel [124].
  5. Adjust 'Volume' to minimum [0].
  6. Press 'Volume Left' on the receiver.  Red 'CHK' appears in upper corner.
  7. To Exit Service Mode:
  8. Press 'Action' and 'Power' on the Receiver simultaneously for more than 2 seconds. The receiver momentarily shuts OFF, the come back On, tuned to channel '3' with a preset level of sound.  Any programmed channels, channels caption data and some other user defined settings will be erased.
  9. Press 'Power' on the remote control to display the serviceman adjustment modes menu, select adjustment by pressing Vol Right/Volume Left buttons and Channel Up/Channel Dn buttons on the remote control, and 'Action' to enter the mew adjustment data into memory.
TO CHECK PURITY
  • Press recall on the remote control when the 'Serviceman Mode' red check is displayed.  For each press  the screen will show [NORMAL SCREEN => WHITE SCREEN => RED SCREEN => GREEN SCREEN => BLUE SCREEN = BACK TO NORMAL SCREEN]
TOGGLE BETWEEN AGING AND SERVICEMAN MODES.
  • While 'CHK' is displayed on the top left corner of the CRT, pressing 'Action' & 'Vol-Up' on the TV simultaneously will toggle between the modes.  Red 'CHK' for serviceman and Yellow.
ENTERING SERVICEMAN MODE, BY OPENING THE SET
  • While receiver is connected and operating in Normal Mode, momentarily short test point [FA1] to Ground [A] board.
  • The receiver enters 'Aging' mode.  Yellow letters 'CHK' appear in the upper left corner of the screen. [The volume Up/Dn will adjust rapidly]
FOR ADJUSTMENTS

  1. Press "Ch Up/Ch Dn" & "Vol >/Vol<" on the remote control to select one of the available Service Adjustments.  Press 'Action" to enter the adjustment.  Press 'Action" AGAIN to go back to the adjustment menu.   [Note:  Write down the original value set for each address before modifying anything.  It is easy to erroneously adjust the wrong item.]
  2. Press "Right/Left" on the remote control to adjust the level of selected service adjustment.
Posted By: FRANK at 06:03
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