Sony KDL-46Z4100 - T-con?

[phil@philporter.com]

Sony KDL-46Z4100 turns on with the screen showing a few white lines that gradually goes mostly to white. Channels and menu items show (sometimes faintly). Interesting to me that when changing the channels they change very gradually fading out from on and fading in to the next.
I've read many of the threads on this model, but not sure if all the symptoms match. Cleaned ribbon connections with no change.
Any thoughts as to the probability of this being a T-con board problem?
Boards are kind of expensive for a 7 year old set, but may take a chance if probability seems to be T-con.
(took photo of back of TV with T-Con detached) Thanks.

[nomoresonys]

Re: Sony KDL-46Z4100 - T-con?

I'd try a tcon, theyre usually pretty reasonably priced, if it dont fix it, at least you eliminated it and you have a spare if you ever need it, if you get one, be sure to match it up with your panel number.

[sordids999]

Re: Sony KDL-46Z4100 - T-con?

im guessing possible bad panel or tab bond fault

[billansor]

Re: Sony KDL-46Z4100 - T-con?

No
It is a T con problem

There are some surface mounted caps on the right side that if heated up will show a picture again... I forget.. but there are about 11 of them...

This T con is under a lot of heat..

[white1991]

Re: Sony KDL-46Z4100 - T-con?

Stupid question, but is it possible for a T.V to not have a T-con?
I have a LCD T.V, but I don't see any T-cons

[CapLeaker]

Re: Sony KDL-46Z4100 - T-con?

the LCD has to have a T-Con. Follow the LVDS cable from the main board to the T-Con. I is usually behind a metal shield close to the top or bottom.

[Glitcher]

Re: Sony KDL-46Z4100 - T-con?

Looks more like a panel problem to me. This model is known for the tcon failing but usually with the faulty gamma chip, though this problem doesn't look like that. The tcons for this model is hard to source and a little pricey.

[nicholas1110]

Re: Sony KDL-46Z4100 - T-con?

On this tcon, usually when a as15 chip fails you will get horizontal lines where there is text or an image displayed on the screen. I suggest the first step would be to check the gamma voltages to confirm a failed as15 chip.

[nomoresonys]

Re: Sony KDL-46Z4100 - T-con?

indeed glitcher the prices on this tcon are sick, I'd troubleshoot that tcon real good, see if you can't fix it on component level.