Samsung LE37B650T2W, white picture

[Sraros]

Hello,
I picked up this TV with a problem showing white image.

When I unplug the right ribbon from the T-con to the panel board the right side is white with a dark shade at the edge and the left side shows perfect image.

When I unplug the left ribbon from the T-con to the panel board the left side is dark and the right side shows image but white. After a while the left side turns grey with vertical and horizontal lines. I found online that by swapping the AS15G it fixes images problems but not in my case.

[nomoresonys]

Re: Samsung LE37B650T2W, white picture

could be tcon or panel problem, maybe try the tape cut-off method.

[diif]

Re: Samsung LE37B650T2W, white picture

That's going to be the gamma IC on the t-con, I'd guess an AS15-F.
It's the IC top right in photo #2.

[nomoresonys]

Re: Samsung LE37B650T2W, white picture

So are you saying you changed out AS15G and have same exact problem?

[dskall]

Re: Samsung LE37B650T2W, white picture

Most likely a panel problem. Also lots of test points on t-con to check.

[neilc6]

Re: Samsung LE37B650T2W, white picture

I've done AS15 or tcon swaps with whitewashed video on these old LCDs before with no change so assumed the problem was in the panel.

[Sraros]

Re: Samsung LE37B650T2W, white picture

So are you saying you changed out AS15G and have same exact problem?

Yes changed the IC but nothing changed.

I kept the boards and threw away the rest TV after seeing your posts. So thank you all but TV is gone

[nomoresonys]

Re: Samsung LE37B650T2W, white picture

ooo, that was an early toss, many times it's just one of those little capacitors on the panel driver board that needs changed out.

[diif]

Re: Samsung LE37B650T2W, white picture

You changed it more than once ? it's not uncommon to get a faulty AS15.

[Sraros]

Re: Samsung LE37B650T2W, white picture

You changed it more than once ? it's not uncommon to get a faulty AS15.

No only once I changed it.. I tried a couple of times fixing panel boards but I never managed to bring to life one and always remain with the doubt if the panel itself has a damage or the board