SONY Bravia kdl-40w4100 bad Tcon sympthons

[sidgallup]

Ive had this TV for years and this is the first tie it has gave me problems.
When it gets hot (after 15-20 minutes) the image starts to look brighter than it should, colors distorted, and the longer its on the worst the issue becomes.

Ive read this is a classic issue on older TVs with AS15 ICs, but this particular model does not have an AS15 chip on the Tcon board, does anyone have experience on this particular model? does this TV even use an AS15 chip? i cant find it unless its labeled as somehing else or is located on other board and not on the T-con.

[yokoono]

Re: SONY Bravia kdl-40w4100 bad Tcon sympthons

AS15 is a gamma corrector. Look for on the t-con, after the datasheet, an integrated one with these functions.

[budm]

Re: SONY Bravia kdl-40w4100 bad Tcon sympthons

Show us the pictures of the boards and the whole back side of the TV showing all the boards so we can see what we are dealing with.

[sidgallup]

Re: SONY Bravia kdl-40w4100 bad Tcon sympthons

Sorry for the late rerply, ive been busy with a lot of work... anywys, heres some pics of the boards

https://imgur.com/a/OGOTTWj

Im also uploading a video to Youtube where its clearly visible the issue im facing. I still cant find the AS15 IC anywhere, unless its below that big heatsink on the mainboard? who knows maybe some of you can help me.


EDIT: Heres the video https://youtu.be/jLV7Qiprdz0
what could it be? as i expalained, image gets worse and worse the more its turned on, whatever the issue is the component responsible starts failing when it gets hot.