Light Solarization on Faces on Samsung TV

[james030]

Hello hopefully some of you can help or guide me...

My Samsung LN40A530P tv randomly colorized faces and light colors when I was watching a movie. After some online researching I think its solarization even though mine is not as bad as most ive seen. My menus all seem fine and most colors are fine even though some get extremely dark



I have accessed the service menu and changed the option byte lvds setting as someone suggested and it made it worse so I reverted back. Now I belive it is the tcon board however I have no idea as I have never had problems with tvs before.
If anyone could guide me I would greatly appreciate it

[sordids999]

Re: Light Solarization on Faces on Samsung TV

Posting pictures of the back of your tv showing the boards with clear pictures may help you more with fixing your problem

[CapLeaker]

Re: Light Solarization on Faces on Samsung TV

post a good hi res picture of the Tcon board. See if there is a AS-15 chip on it.

[budm]

Re: Light Solarization on Faces on Samsung TV

Screen shot of the images on the screen also.

[james030]

Re: Light Solarization on Faces on Samsung TV

Thanks for the quick replies, attached are pictures. thanks again

[budm]

Re: Light Solarization on Faces on Samsung TV

It looks like it has slightly off Gamma Voltages, I see AS15/or AS19 GAMMA Vref IC on that T-con board.
You can test the GAMMA dcV on those GAMMA testpoints on the board.

[CapLeaker]

Re: Light Solarization on Faces on Samsung TV

I think it's a AS19, picture isn't that clear.

[james030]

Re: Light Solarization on Faces on Samsung TV

Sorry about the bad pic, Yes it does say AS19

[dick_barton]

Re: Light Solarization on Faces on Samsung TV

It looks like a replacement Tcon is required. Can you or do you know anyone who could replace the AS19 IC. If you order a replacement you need to match up the numbers shown in the photo.

[aaronwt6]

Re: Light Solarization on Faces on Samsung TV

You can also use a V400H1-C01 board in that TV. The AS19 chip is much more difficult to swap than the AS15. It has a ground plate / heat sink on the bottom that is soldered to the board. I consider myself quite good with swapping small surface mount chips and getting one of these back on straight is beyond my skill lever for sure. And that's with a nice $350 hot air rework station.

[james030]

Re: Light Solarization on Faces on Samsung TV

Changed the tcon board as changing the chip would have been impossible for me and this worked.
Thanks to all

[budm]

Re: Light Solarization on Faces on Samsung TV

Thanks for the follow-up.