How do I diagnose/fix my LCD tv? the picture quit working, but there is still static sound.

SOURCE: lcd tv screen stays black, but with sound

just open up the tv 2 the main bord then look for a littler green button press it and then plug it in and it will work i did it 2 mine

SOURCE: Sound but no image on my LG Plasma TV

Have sound but no imagen

SOURCE: lg lcd tv screen goes

I had this problem on my 42" Philips. Just got it yesterday and worked fine on the tv stand. As soon as I mounted the TV to the wall via wall mount system, I had the exact same issue you did. Figured it out today.

The wall mount was putting pressure against the center of the back of the tv (tv set had a slightly rounded back plate, and the mount was a flat plate). As soon as I put spacers (part of the wall mount hardware set) between the wall mount braket and the tv so there was no contact except at the mounting holes, the tv worked fine.

My theory is the pressure pushed the tv back plate against some board components which caused them to overheat (no air flow); or put pressure on internal connectors. I dont know.

Hope this helps, may not apply to your situation.

SOURCE: PLASMA TV PROBLEM

The problem with this set, is defective YSUS board, to avoid future same problem, you must change the following boards: YSUS, ZSUS & Control.
Verify with LG if your serial Number is included within
lots production that were recalled by this design defect

Testimonial: "I'll try to contact LG dealers. Very hank you sir"

SOURCE: LG 32lc2du suddenly no picture, no sound. green

I had the same problem and it was a capacitor in the power supply