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 !

Monday 25 March 2019

PANASONIC PLASMA - TH-42PHD5 -TH-50PHD5 - TH-42PHW5 -TH50PHW5 - HOW TO ENTER SERVICE MODE - POWER SUPPLY BOARD VOLTAGE SETUP & DRIVER SETUP

PANASONIC PLASMA - TH-42PHD5 -TH-50PHD5 - TH-42PHW5 -TH50PHW5 - HOW TO ENTER SERVICE MODE - POWER SUPPLY BOARD VOLTAGE SETUP & DRIVER SETUP




SERVICE MODE AND OTHER ADJUSTMENTS
CAT (computer aided test) Mode
  • Press and hold the Volume/Down button on the front panel of the unit and press the status button on the remote control three times within one second, this will place the unit into the CAT Mode.
  • To exit the CAT mode, access the ID mode and switch off the main power.
I2C Mode
  • Select the I2C mode by pressing the Up/Down button on the remote control from the front page of the CAT menu, and then press the Action button on the remote control.
How to use the I2C mode?
  1. Select the alignment subject by pressing the UP/Down buttons on the remote control.
  2. Select the alignment item by pressing the Left and Right buttons on the remote control.
  3. Adjust the optimum setting by pressing the Volume Up/Down buttons on the remote control.
  4. The data is memorized when the R button is pressed on the remote control or the alignment Subject (or item) is changed.
  5. To exit the I2C mode, press the R button on the remote control.
CD mode
  • Select the CD mode from the front page of the CAT menu by pressing the Up/Down button on the remote control, and then press the Mute button on the remote control for more than 5 sec.
  • The software version of the EEPROM (IC9354) can be upgraded by:
  1. Installing a new version IC
  2. Loading the new version software from the loader tool, TZSC07036.
Memory data change
  • Address à Change by pressing the Up/Down buttons on the remote control.
  • Data à Change by pressing the Volume Up/Down buttons on the remote control.  The data is memorized when the main power switch is pushed to the off position.
  • To exit the CD mode, press the R button on the remote control.
SD Mode
  1. Select the SD mode from the front page of the CAT mode by pressing the Up/Down button on the remote control, and then press the Action button on the remote control.
  2. History of remote control command à (Factory use)
  3. To exit the SD mode, press the R button on the remote control.
I2C Menu Structure:  The values indicated in this flowchart are sampled data.

Click on image. 

POWER SUPPLY BOARD & VOLTAGE SETUP
  • Input a Black & White video signal.
  • Set the picture mode to Normal and the White Balance to Normal.
  • Adjust and confirm the indicated test point below for the specified voltage.
ADJUSTMENT TABLE

Name
Test Point
Voltage
Volume
PFC
P24 pin 1
400V ± 1V
R548
Vsus
P1 pin 2
175V ± 1V
R625
Vda
P3 pin 1
75.0 ± 0.5V
R545
CONFIRMATION
Name
Test point
Voltage
+18V
P4 pin 1
17.2V ± 0.5V
+13.5V
P5 pin 1
13.2V ± 0.5V
Audio +15V
P6 pin 1
Audio 13.5V ± 0.5V
Audio –15V
P6 pin 3
Audio –13.5V ± 0.5V
5.25V
P5 pin 5
5.1V ± 0.3V
STB5V
P7 pin 4
5.0V ± 0.3V
Driver Set-up:  Item / Preparation
  • Input an APL 100 % white signal.
  • Set the picture mode to Normal and the White Balance to Normal
Adjustments
  • To perform the following adjustments, please refer to the panel information label located on the heat sink of the panel. 
Name
Test point
Voltage
Volume
Vsus
TPVSUS (SS-BOARD)
Vsus ± 1V*
R625 (P3-BOARD)
Vbk
TPVBK (SC-BOARD)
Vbk ± 5V*
R6670 (SC-BOARD)
Ve
TPVE (SS-BOARD)
Ve ± 1V*
R6770 (SS-BOARD)
Vset
TPVSET (SC-BOARD)
218 V ± 6V
        - - - - -
Vad
TPVAD (C9-BOARD)
Vad ± 1V*
R6477 (SC-BOARD)
Vda
TP117 (SC-BOARD)
74V ± 1V
R545 (P1-BOARD)
VSCN
TPVSCN (SC-BOARD)
Vad+118 ± 2V
     - - - - - - -
Posted By: FRANK at 01:39
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