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!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Friday, 29 March 2019

HOW TO ADJUST VA AND VS VOLTAGES TO LG PLASMA TVS

HOW TO ADJUST Va and Vs VOLTAGES TO LG PLASMA TVs

LG 32”XGA_50”_42”_60” Plasma Televisions Display Panel Voltage (Va & Vs) adjustment procedure
50” POWER PCB Ass’y Voltage Adjustment (Va, Vs voltage Adjustment).  50PG6000, 50PG6010
Va Adjustment.
* After receiving 100% Full White Pattern, HEAT RUN.
* Connect + terminal of D. M.M. to Va pin of P811, connect -terminal to GND pin of P811.
* After turning VR901,voltage of D.M.M adjustment as same as Va voltage which on label of panel right/top (deviation; ±0.5V)
Vs Adjustment
* Connect + terminal of D. M..M. to Vs pin of P811, connect -terminal to GND pin of P811.
* After turning VR951, voltage of D.M.M adjustment as same as Vs voltage which on label of panel right/top(deviation ; ±0.5V)
42” POWER PCB Ass’y Voltage Adjustment (Va, Vs voltage Adjustment)  42PG6000, 42PG6010
Va Adjustment.
> After receiving 100% Full White Pattern, HEAT RUN.
> Connect + terminal of D. M..M. to Va pin of P811, connect -terminal to GND pin of P811.
> After turning VR901,voltage of D.M.M adjustment as same as Va voltage which on label of panel right/top (deviation; ±0.5V)
Vs Adjustment
> Connect + terminal of D. M..M. to Vs pin of P811, connect -terminal to GND pin of P811.
> After turning VR951, voltage of D.M.M adjustment as same as Vs voltage which on label of panel right/top(deviation ; ±0.5V)
60”(FHD), 50”(FHD) POWER PCB Ass’y Voltage Adjustment (Va, Vs voltage Adjustment). 50PG7000, 60PG7000, 50PG4000
Va Adjustment.
* After receiving 100% Full White Pattern, HEAT RUN.
* Connect + terminal of D. M..M. to Va pin of P11, connect -terminal to GND pin of P11.
* After turning VR901,voltage of D.M.M adjustment as same as Va voltage which on label of panel right/top (deviation; ±0.5V)
Vs Adjustment.
* Connect + terminal of D. M..M. to Vs pin of P11, connect -terminal to GND pin of P11.
* After turning VR951, voltage of D.M.M adjustment as same as Vs voltage which on label of panel right/top(deviation ; ±0.5V)
32”(XGA) POWER PCB Ass’y Voltage Adjustment (Va, Vs voltage Adjustment). 32PG6000, 32PG6010
Va Adjustment.
1. After receiving 100% Full White Pattern, HEAT RUN.
2. Connect + terminal of D. M.M. to Va pin of P811, connect -terminal to GND pin of P811.
3. After turning VR901,voltage of D.M.M adjustment as same as Va voltage which on label of panel right/top (deviation; ±0.5V)
Vs Adjustment
1. Connect + terminal of D. M..M. to Vs pin of P811, connect -terminal to GND pin of P811.
2. After turning VR951, voltage of D.M.M adjustment as same as Vs voltage which on label of panel right/top(deviation ; ±0.5V)
The module keeping condition
* The normal temperature condition (more than 15°C)  >  Immediately the line supply.
* The module keeping condition: 0°C > The module must be kept for more than 2 hours at the normal temperature.
* The module keeping condition: -20°C > The module must be kept for more than 3 hours at the normal temperature.
* The case of Gu-mi factory at the winter season. > The module must be kept for more than 5 minutes at the heating zone (40°C~45°C)
Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transformer will help protect test instrument.
> Adjustment must be done in the correct order.
> The adjustment must be performed in the circumstance of 25±5°C of temperature and 65±10% of relative humidity if there is no specific designation.
> The input voltage of the receiver must keep 100~240V, 50/60Hz.
> The receiver must be operated for about 5 minutes prior to the adjustment.
 After RGB Full White in HEAT-RUN Mode, the receiver must be operated prior to the adjustment.
To Enter into HEAT-RUN MODE
* Press the POWER ON KEY on R/C for adjustment.
* Press the ADJ KEY on R/C and enter EZ ADJUST Select “3. Test Pattern” by using D /E (CH +/-) and press ENTER(V ) Select “White” by using F /G (VOL +/-) and press ENTER(V )
> Set is activated HEAT run without signal generator in this mode.
> Single color pattern (RED / BLUE / GREEN) of HEAT RUN MODE uses to check panel.
Caution: If you turn on a still screen more than 20 minutes (Especially digital pattern, cross hatch pattern), an after image may be occur in the black level part of the screen.
Posted By: FRANK at 06:36
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