Re: Sony Bravia KDL-46NX800 46” TV; Intermittant Display

This morning I turned on the TV and sure enough the solid vertical bars & lines were displayed. After about 30 minutes the display corrected itself. The problem is now consistently failing when 1st tuned on while cold. And it is consistently correcting itself after about 30-40 minutes.

The T-Con board is mounted near the bottom of the Sony TV. So I removed the TV from the base and laid it down on the kitchen table. I then remove the support bracket so I could remove the 4ea ribbon cables that are connected...

Re: Sony Bravia KDL-46NX800 46” TV; Intermittant Display

Roger that,

1) "disconnect one ribbon cable at a time from the T-con to the panel". I'll need to remove the stand and lay the TV down to get to the ribbon cables on the bottom of the T-con module.

2) "You also can look with an oscilloscope at the LVDS signal while turning on and off the menu all the time". I do not have a oscilloscope handy, but could chase one down next week. I am not sure where to clip the probe to monitor this "LVDS" signal.

3)...

Re: Sony Bravia KDL-46NX800 46” TV; Intermittant Display

ReeceyBurger123,

Interesting youtube video. The issue that TV is having is not quite like the issue that I have. It doeve video content, mine doesn't. The vertcal lines are dynamic or sporadic, my is more constant or constant, the lines and bars do not jump around. They do drift some and change size and colors. This happens in very slow motion and it will slowly spread across the full screen. But again, there is no video content in the image on the screen.

Thanks, Tom

Re: Sony Bravia KDL-46NX800 46” TV; Intermittant Display

ReeceyBurger123,

I just got the back off while it is still on the stand. With limited experience on flat screen TV's I'm trying to learn the acronyms that is used for these TVs.

What does "tab bond issue" mean?

Thanks, Tom

Re: Sony Bravia KDL-46NX800 46” TV; Intermittant Display

CapLeaker,

Thanks for the response. I have been keeping an eye on this TV for most of the day. After powering on this morning, having the display issue, then the video issue cleared up after about 45 minutes. While watching the TV for most of the day the issue has not returned. The issue seems to return after the TV has been off for 30 minutes or more.

I'm going to need to remove the back and get my hands into it. I'll keep you posted with what I find out.

Are there some resources...

Hello, I'm looking for some assistance on repairing my Sony Bravia KDL-46NX800 46” TV, it is about 5 or 6 years old and is intermittent. At times it will display solid vertical bars & lines in the display with no video content. The sound plays through the speakers and there is no video content displayed, except for the solid vertical bars. You can also select other video sources with no change. I can turn the TV off for a few hours and return, sometimes the TV will work and sometime it will not. As soon as I start to look into fixing the problem, it starts working again.
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Re: New Members - please post your introductions here

Hello, I am in my late 50’s and have been working with electronics/computers/simulators for many years. After high school I went to a 2-year community college in Wilmington NC and took their electronics technology curriculum. Graduated with an Associate’s degree in electronics in 1977. Started working in Marine Electronics installing/repairing all types of marine electronics on small boats, commercial boats, yachts and large ships. Also worked with a Land Mobile/RCC/Pager company, installing/repairing communication...