Sony bravia KDL-40V4100 audio and picture cycling on and off

Sony Bravia KDL-40V4100 models have a problem with the screen going blank, faded or washed out ( negative ghosting) . It is caused by a bad chip on the T-con board. A replacement chip is available from shopjimmy.com (Sony 55.40T02.C08 T-Con Board Component Repair Kit) for $14.95- If your not an excellent solderer, send your board to them for a repair $69.95.

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It could be something like an ETC-inverter board, or the power board. I have the same TV with a cracked screen. Are you interested in selling yours?

Could be the power board or main board defective, but I suggest you do firmware update first. Go to http://esupport.sony.com/US/perl/swu-list.pl?mdl=KDL42V4100&LOC=3#div_pos_30 download the software.

That symptom may cause by the main board or t-con board, I suggest you do software up grade first.

I have the same tv with the same problem. My tv is about 3 1/2 years old. I took it to the shop yesterday and today they told me that I had a bad lcd panel and a bad FL1 circuit board. They also told me it was going to be $3800.00 dollars to fix. I am now on my way to buy another tv, needless to say it will not be a Sony. Sony knows about this problem and refuse to do anything about it. Good luck.

turn cc on receiver

Probably the main board. This has a 1 year mfc parts and lobor warr. I would contact Sony for the nearest auth servicer. If you open it you will void the warranty.

ACTUALLY WITHOUT SEEING YOUR PROBLEM PHYSICALLY I CANN'T SAY ANY THINK, BUT FOR YOUR KNOWLEDGE LET ME TELL YOU NO TV MAKES ANY KIND OF SOUND DURING SHUT OFF. & you are saying for more than 30sec, i think you should call the SONY TECHNICIAN for visit.

it is your HD box. get another one.