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 !

Tuesday, 13 October 2020

LG 55LW5600-5700-6500, LG55LX6500, LG79UB9800, LG79UF7700 – T-CON BOARD INTERCONNECTIONS SCHEMATICS AND VOLTAGE DETAILED CHARTS

 79UB9800 Interconnection


TV Models: LG 79UB9800, LG 79UF7700

PANEL P/N: EAJ62573301

Part Number:

T-con Board P/N: 6870C-0541B

DESC or Panel Sticker Number: (DESC: 79 UHD Curved Control)

Warning: Be sure to install the screws in the T-CON board before applying power. Damage to the board will occur.

PANEL TEST:  To run the Panel Test (Testing the T-CON without the Mainboard), simply unplug CN7_1 or CN7_2. Apply 12V to the Fuse F1 on the T-CON. Apply power to the set. (Backlights and Power Supply should already be working). T-CON outputs colour patterns on the screen. This test confirms the T-CON board, Power Supply (PSU), Panel and Backlights are working normally.


55LX6500 Interconnect

TV Models: LG 55LX6500

Part Number: EBU61004702

T-con Board P/N: EAX62110705(0)

DESC or Panel Sticker Number: LC550EUC-SCA1



55LW5700 Interconnect

TV Models: LG 55LW5600_5700_6500

PANEL P/N:

Part Number: 6871L-2603A

T-con Board P/N: 6870C-0369B

DESC or Panel Sticker Number: LC550EUF-SDF1 (DESC: V6 55 FHD 120Hz)

Warning:   T-Con board under shield. Be sure to reinsert screws before operating set with shield removed.   

  Panel Test:    To run the T-con “Panel Test”, remove the LVDS cables. Jump 12V to the 12V fuse. Jump VCC 3.3V to pin-44 on CN1. White, Red, Blue, Green and Black patterns show on screen.



Posted By: FRANK at 09:20
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