LG 42LH3000 Bad picture after T-con replacement

[antas]

Hi guys. I have got a bad picture on my LG 42LH3000.
Was no picture at all. Just replaced t-con board and have this issue with the picture. Is that means bad t-con board or something else?
I added pics here bought of t-con boards. One was with no picture at all and another (replacement board) with a bad picture.
Thanks to all in advance for any help.

[dick_barton]

Re: LG 42LH3000 Bad picture after T-con replacement

The two boards certainly look identical. Did you check the fuse F100 on the no picture tcon?

[antas]

Re: LG 42LH3000 Bad picture after T-con replacement

The two boards certainly look identical. Did you check the fuse F100 on the no picture tcon?

Yes, I did it. The fuse is OK.

[dick_barton]

Re: LG 42LH3000 Bad picture after T-con replacement

If you do a web search I think you have the wrong Tcon board

https://www.youtube.com/watch?v=jg4_nn3nBzs

[antas]

Re: LG 42LH3000 Bad picture after T-con replacement

If you do a web search I think you have the wrong Tcon board

https://www.youtube.com/watch?v=jg4_nn3nBzs

Thank you for coming back to me. Yes, I saw this video before I opened the thread here. The T-con board is genuine, because of this TV wasn't opened since I bought it (about 7 years ago)...

[dick_barton]

Re: LG 42LH3000 Bad picture after T-con replacement

So is your set 42LH3000 or 42LH3000-ZA

It's probable that the Tcon board is at fault. Perhaps you can return and exchange it.

[antas]

Re: LG 42LH3000 Bad picture after T-con replacement

So is your set 42LH3000 or 42LH3000-ZA

Sorry for confusing you. Yes, my set is 42LH3000-ZA

[dick_barton]

Re: LG 42LH3000 Bad picture after T-con replacement

It's confusing since they use different tcon boards.

[antas]

Re: LG 42LH3000 Bad picture after T-con replacement

It's confusing since they use different tcon boards.

Do you think that the T-con board is certainly bad?

[dick_barton]

Re: LG 42LH3000 Bad picture after T-con replacement

No; but since your original Tcon failed and your replacement appears to give you some sort of picture then I would be suspicious of it.
You have checked that you inserted the ribbons correctly before locking down the connector tabs and that the LVDS cable is sitting in properly at both ends ie Tcon and mainboard?

[antas]

Re: LG 42LH3000 Bad picture after T-con replacement

Thank you, my friend. I will try to do this one more time and more accurately.

[antas]

Re: LG 42LH3000 Bad picture after T-con replacement

All checked and cleaned one more time. The picture still split into two parts (the sound works well)
Any ideas, please?

[budm]

Re: LG 42LH3000 Bad picture after T-con replacement

https://www.badcaps.net/forum/attach...0&d=1507893637
Both PCBA use the blank board.
Your original board is RUNTK 9YA47
The replacement board is RUNTK 9YD01
The barcode sticker on the bottom left of the board is not the same. You may want to scan that and see what it shows and do more research about the boards. It looks to me that replacement board is not compatible.

[dick_barton]

Re: LG 42LH3000 Bad picture after T-con replacement

All the Tcon's I find when I google for 42LH3000-ZA tcon look nothing like the two you show.? I'm puzzled.

http://www.ebay.ie/itm/6871L-1608A-T...UAAOSwCL9ZtARd

http://www.ebay.com/itm/LG-42LH3000-...-/263123393655

[budm]

Re: LG 42LH3000 Bad picture after T-con replacement

His model version uses SHARP panel, same model also shows LG and AUOPTO LCD panel also.
This one has same number: RUNTK 9YA47
http://www.ebay.com/itm/LVDS-BOARD-F.../321741976728?

[antas]

Re: LG 42LH3000 Bad picture after T-con replacement

His model version uses SHARP panel, same model show LG and AUOPTO LCD panel also.
This one has same number: RUNTK 9YA47
http://www.ebay.com/itm/LVDS-BOARD-F.../321741976728?

My model is 9YD01. Would you think the board, you linked me, should work on my TV?

[budm]

Re: LG 42LH3000 Bad picture after T-con replacement

OK, my mistake, your original is 9YD01, not 9YA47.

[koka0011]

Re: LG 42LH3000 Bad picture after T-con replacement

try this
change the ROM ic on tcon board.remove the ROM ic on old t-con board and solder it on the new T-con board

[antas]

Re: LG 42LH3000 Bad picture after T-con replacement

try this
change the ROM ic on tcon board.remove the ROM ic on old t-con board and solder it on the new T-con board

What reason to play this way if old T-con was not working?

[tw2005]

Re: LG 42LH3000 Bad picture after T-con replacement

I would Return the board, try another. Revision are the 2 letters ZZ so these boards should be the same.

Part numbers quoted I'm seeing are:

RUNTK4224TPZZ
DUNTK4224TPZZ,
CPWBX4224TPZZ

Panel Sticker Number: LK420D3LA77
Panel Manufacturer: Sharp

There are revisions YN, ZD, ZF, ZQ, ZU, ZW, ZX, ZZ

ZZ is for the above panel

Image of the ZZ on SJ the barcode is also different again, would not surprise that is like a serial number and each board is uniquely coded.