LG 55UK6750 PLB ...Help Please

[burbutsalos]

Hello every one . I have in my hands this TV. The status is...
Backlight ON Sound ON Display ...gone .
I tried the easy fix with tape but no luck. The best i could get after using tape on both sides of the ribon was a completely white screen. So the next step was to try find any kinds of shorted capacitors at first.
I found none on the panel boards with the power off . As soon as i turn the tv ON i get from both sides of the panel one capacitor going on each cof short . .
As soon as i remove the left side ribbon for example , the short appears only on the right side and is gone on the left and vice versa.
Any ideas whta to check?
Could this be a mainboard issue ? No seperate T-Con exists.

I have taken some photos and circled the shorted caps on 2 points and a photo of the mainboard
Any help would be greatly apreciated!!

[Diah]

Re: LG 55UK6750 PLB ...Help Please

MB issue... XD chip some one re flow it in wrong way !!!!

[nomoresonys]

Re: LG 55UK6750 PLB ...Help Please

Unhook the mainboard from the panel, tv unplugged from power, test those caps you refer to in ohm mode, what do you get?

[njsutton1995@outlook.com]

Re: LG 55UK6750 PLB ...Help Please

If I'm looking at what I think I'm looking at the board where the ribbon cables are connected but no connectors, that's your address board, or the display panel itself. the tape trick and all that jazz just bypasses shorts in your screen.
BUT backing up and just thinking of your symptoms, I'd suggest main board or tcon as those are the only two that will control the picture other than the screen.

https://tvpartstoday.com/search?type...st&q=55UK6750+