Re: Samsung TV display deterioration

Good work gentlemen! I took the easy (and more importantly, faster) way out and replaced that whole board, which I found used for about $70. TV works like a champ now! Thank you both for your professional insight.

Re: Samsung TV display deterioration

Yeah, I figured you were gonna say that once I realized that I hadn't removed that panel. Here's the T-CON board.
It is AU Optronics, model T460HW03 V.8...

Re: Samsung TV display deterioration

How would one go about testing one of these?

Here is the back of the TV.

I've done quite a bit of surface mount soldering, but I guess everything is relative, so it depends on your definition of "competent" lol...

Re: Samsung TV display deterioration

Here are the before and after pics of the problem. Sorry about the angle, the tv is already on my workbench rack (thus the wood slat in the pics). Also ignore the shadow in the upper right corner, that's the case for my tablet coming into view of the camera lens....

Re: Samsung TV display deterioration

In this instance there was and is no "forewarning", just a gradual fade over a relatively long period of time (a few minutes initially, but then within about 20-30 seconds while the TV is still warm). I've had the TV off, so I just fired it up and it's running right now... I'll post a pic of the problem shortly.
Thank you for your time, Tom.

I have a Samsung LN46B640R3FXZA. It is somewhere around 4 years old. It resides on a TV stand, so there is nothing around or near it as far as ventilation restriction. The picture quality has recently started deteriorating after the TV "warms up". It will display perfectly fine for a few minutes (sometimes 10 or 15 minutes), and then the picture will slowly turn into what looks like a photo negative and becomes dark and grainy. It does this on all inputs and input sources (cable box, DVD player, media streamer... two are HDMI, one is composite), and the deterioration also affects the...

Re: New Members - please post your introductions here

Greetings all! I'm Jeff, an AV Installation Tech looking to broaden my horizons by dabbling in TV repair. After a few successful minor repairs, I'm hooked! Looking forward to interacting with the broad skill set here.