LG Plasma 60pn6500-UA red screen

[zzrobertsmith]

Hello,

I have an plasma LG 60pn6500-UA manufactured in 2/13. A few weeks ago I started notice a slight red distortion coming and going on peoples faces and other lighter scenes. The other night the screen became virtually unwatchable with red distortions on all dark areas as well. I've checked on all other ports and menu screens and the problem exists. (I did find the HDMI2 does not work. )I have also reseated all connections and checked the solders on the x and and y sus for cracks and all looked good. Since the HDMI 2 port does not work I am wondering if this is an main board issue or if there is something else I should check before potentially wasting money swapping out boards. I have attached some pictures of the screen below. Thanks in advance for any help you can provide.

Bob

[zzrobertsmith]

Re: LG Plasma 60pn6500-UA red screen

I was able to some additional pictures of the boards/ part numbers if they are any help in diagnosing my problem.

[Hamie]

Re: LG Plasma 60pn6500-UA red screen

Jump the 2 holes marked ext_auto_gen on the 'control board'

Disconnect the LVDS cable that connnects the control board to the Main AV board.

You should get test patterns, are they affected? If they are the main board is not your problem....

I doubt that the mainboard is causing this, more likely the control board or the sustain boards. But do this test first as it will eliminate the very slight possibility to the main board .

[zzrobertsmith]

Re: LG Plasma 60pn6500-UA red screen

I just performed the test you suggested and all test patterns displayed clearly with no red or blur. Then for the hell of it I ran the same test with LVDS attached to the connected and that performed clearly as well. Does the ext auto gen just bypass the main AV board? When I removed the jumper with LVDS connect I got a red screen (normally black) with the no signal message.

If I'm understanding the test you had me run I think this means the main board is bad?? is that a correct assumption?

[mmartell]

Re: LG Plasma 60pn6500-UA red screen

That is correct.

[Hamie]

Re: LG Plasma 60pn6500-UA red screen

Yes you have a faulty main board.
Try heating it up with a hair dryer and see if the picture goes back to normal.

[zzrobertsmith]

Re: LG Plasma 60pn6500-UA red screen

The hair dryer had no effect on the picture.

[tom66]

Re: LG Plasma 60pn6500-UA red screen

Try reseating the LVDS cable which runs between the main board and control board. If it is loose, you might see this symptom.

[zzrobertsmith]

Re: LG Plasma 60pn6500-UA red screen

I had tried that prior to posting on here and saw no improvement. I will try it again tonight.

On a side note I've been doing some research in the event I need to replace the board. It does not seem to be as readily available as the other boards. This leads me to believe the boards with part number EBT62394201 and board number EAX65071307(1.1) may have had a manufacturing defect of some sort since no one can seem to keep them in stock. Some of the websites I have looked at list substitute parts. Is there any way knowing for sure what if any substitute parts will work?

[zzrobertsmith]

Re: LG Plasma 60pn6500-UA red screen

I re seated the LVDS on both the control board and main board and did not see any improvement.

[ChurchTech]

Re: LG Plasma 60pn6500-UA red screen

Hi Bob,

Did you ever find a replacement board? I'm trying to track one down for the same model/version.

Peace,
Aaron

[zzrobertsmith]

Re: LG Plasma 60pn6500-UA red screen

Below is a link to the one that I bought. It is listed a replacement for the original board. So far I have not had any issues. The new part number is EBT62753601. hope this helps

https://partstore.com/Part/LG%20Elec...53601/New.aspx

[ChurchTech]

Re: LG Plasma 60pn6500-UA red screen

Brilliant! Thanks so much for that info.

There seems to be a lot of misinformation about part number compatibility/valid substitutions at the various online parts retailers.

I'm willing to give this one a shot since it worked for you.

At the same time I'm investigating the possibility of repairing my board... details here:
https://www.badcaps.net/forum/showthread.php?t=52766

Thanks a ton!

Peace,
Aaron

[jameskennedy]

Re: LG Plasma 60pn6500-UA red screen

Unbelievable I have same tv same problem and cant get the main board here in Canada bought tv in canada when best buy went under a couple years ago and LG one price out of warrantee service I paid for wont ship part because its a US tv they say. I say no i havent been to the US in twenty years and certainly bought my tv here in canada. The repair place gives me part number and its the same as Roberts and i go to the partsstore.com and they wont ship to Canada very frustrating.....

[Malachi]

Re: LG Plasma 60pn6500-UA red screen

I had the same tv with a different problem but still it was the main board. I couldn't find one anywhere. So I took a chance and tried one from a 50pn6500 and it worked. Just dropped it in and that was it.

[jameskennedy]

Re: LG Plasma 60pn6500-UA red screen

358 W Army Trail Rd STE 140-352
Bloomingdale, IL 60108 huh best buy ships to Canada from Illinois weird yet LG wont. just ordered from them was 150.00 shipped. happy now.

[jameskennedy]

Re: LG Plasma 60pn6500-UA red screen

Just sucks was barely out of waranty and i paid LG 202.00 for an out of warranty repair and drove an hour with it to the nearest approved repair facility and wait a week before being told i bought my tv in the US which is a crock of doodoo havent even been South of the border in 20 years and that they cant get part for my tv from LG because its a US model.

[jameskennedy]

Re: LG Plasma 60pn6500-UA red screen

now i gotta wait 6-8 weeks for a refund from LG for my money back, also a load of doodoo

[jameskennedy]

Re: LG Plasma 60pn6500-UA red screen

Mine was a different issue as well but same tv mine would go black screen after watching for five minutes then turn it off for twenty minutes and it would go black screen after 15 minutes then turn off for a few hours and it would last a couple hours, but i went through all the bull crap with out of warranty with LG and they gave me the option of paying for an upfront out of warranty repair that covers any part and any labour for a flat rate of 180.00 plus tax. So after hauling it to the next town the repair place guy said it was my main board and gave me the part number.