Samsung LN40A530P1F whites tinted yellow/grey

[damott]

I've got a Samsung LN40A530P1F here that originally wouldn't power up, I've replaced all the bad caps in the power supply and it powers up fine, but there is a yellowish/grey tint to the picture. I've tried adjusting settings but I can't get rid of the tint, it's not horrible and the picture is watchable, but it's definitely there.

I'm suspecting the T-con board is the cause, I've taken these readings:

1-14.77
2-13.78
3-11.53
4-11.10
5-10.70
6-10.45
7-10.33
8-10.28
9-8.85
10-6.25
11-5.39
12-5.17
13-4.77
14-4.14
15-3.53
16-3.19
17-1.31
18-0.317

Am I correct in thinking these reading are bad?

The T-con doesn't have the AS15 chip that seems to fail so often.

Thanks

[damott]

Re: Samsung LN40A530P1F whites tinted yellow/grey

Bump..

Can anyone confirm a bad T-con, if it is the T-con which chip is likely the cause

[mmartell]

Re: Samsung LN40A530P1F whites tinted yellow/grey

Those readings don't look overtly bad but you'd probably have to have the datasheet of the ic and a control signal to rule it out. Does the ic heat up much ? Maybe try cooling it while running and see if pic changes ? Main board can likely cause this fault as well but I'd wait for someone else to chime in.

[tom66]

Re: Samsung LN40A530P1F whites tinted yellow/grey

Can you show us a picture of how the colouring looks off? Have you tried changing the Colour Temperature from Warm to Cool, or switching the preset from Movie mode?

[damott]

Re: Samsung LN40A530P1F whites tinted yellow/grey

I've tried changing the colour temperatur settings, it's a little better in cool1 and cool2 than normal. I thought the T-con might be going because of all the voltages around 10V, I thought it was supposed to be a smooth transition from low to high. Maybe it's just the way this panel is, do they ever yellow with age?

I've attached a picture next to my nexus 7 tablet with the same thing displayed, but its hard to capture the way it looks. The picture was taken with the colour temperature set to normal.

[tom66]

Re: Samsung LN40A530P1F whites tinted yellow/grey

Try accessing service menu (from standby: Mute 1 8 2 Power) and see if you can adjust the WHITE BALANCE controls, or R-GAIN/G-GAIN/B-GAIN or R-OFF/G-OFF/B-OFF.