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 !

Thursday, 14 March 2019

VA & VS VOLTAGE ADJUSTMENT - LG 60 INCH - 50 INCH & 42 INCH PLASMA TVS

Va & Vs VOLTAGE ADJUSTMENT - LG 60 Inch - 50 Inch & 42 Inch PLASMA TVs

ADJUSTMENTS
Each PCB assembly must be checked by check JIG set.  (Because power PCB Assembly damages to PDP Module. So be careful)
PSU(Power Supply Unit) Voltage Adjustment (Va, Vs Voltage Adjustment).
Adjust the voltages Va and Vs supplied from the PSU to the module within the specified range of each module to supply the stable power.
Adjustment (60”).  Va Voltage Adjustment
  • Connect + terminal of D.M.M to Va pin of P812 and connect –terminal to GND pin of P812.
  • Adjust VR901 voltage to match that of the label on the Top/Right of the panel. (Deviation : ±0.5V)
Vs Voltage Adjustment
  • Connect + terminal of D.M.M to Vs pin of P812 and connect –terminal to GND pin of P812.
  • Adjust VR951 voltage to match that of the label on the Top/Right of the panel. (Deviation : ±0.5V)
Connection Diagram of Power Adjustment for Measuring (Power Board): 60”
Adjustment (50”).  Va Adjustment
  • Connect + terminal of D.M.M to Va pin of P12 and connect –terminal to GND pin of P12.
  • Adjust VR951 voltage to match that of the label on the Top/Right of the panel. (Deviation : ±0.5V)
Vs Adjustment
  • Connect + terminal of D.M.M to Vs pin of P12 and connect –terminal to GND pin of P12.
  • Adjust VR901 voltage to match that of the label on the Top/Right of the panel. (Deviation : ±0.5V)
Connection Diagram of Power Adjustment for Measuring (Power Board): 50”
Adjustment(42”).   Va Voltage Adjustment
  • Connect + terminal of D.M.M to Va pin of P812 and connect –terminal to GND pin of P812.
  • Adjust VR901 voltage to match that of the label on the Top/Right of the panel. (Deviation : ±0.5V)
Vs Voltage Adjustment
  • Connect + terminal of D.M.M to Vs pin of P812 and connect –terminal to GND pin of P812.
  • Adjust VR951 voltage to match that of the label on the Top/Right of the panel. (Deviation : ±0.5V)
Connection Diagram of Power Adjustment for Measuring (Power Board): 42”(EAY32808901)