Picture distorts after it has been on for a few minutes

Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

I would suggest you take it to a service center , sounds like an internal problem .

T'Con board fault. Contact any service technician.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Sounds like you need a new color wheel

Chances are you have a defective hyper module. The symptom with this problem is called piecrusting and appears as a squiggly and distorted picture, usually worse at the top. It may dissipate after 20 to 30 minutes as well. This module has been out of production for a few years but some regional companies will rebuild it for around $125.

Bill W
integrityhomeworx.com

replace BULK CAPACITOR on your power supply

The trouble is most likely in the Video processor. If the trouble looks like its tearing the video only from side to side it may be the line doubler circuit. Some of these boards are no longer available but a good TV tech may be able to componnent level repair it for you.

In most of the case, the problem is a defective LCD panel, if is it, there is not worth to fix.

first check the power supply board for puffy capacitors. then change the t-con board on lcd panel

Have the same problem, have found others too, but no solution yet...