Samsung ln46b530p7n dark colors messed up

[RoboDisko]

Recently got the listed TV. On the TV, 0 levels of color are black as you would expect, but 3-127 of each color are all about the same mid-color shade. 1 and 2 are rapidly approaching the mid shade of the color. Values above 127 look about right. So images that are only bright look totally fine, but anything that's more dark looks wrong. This persists on TV generated test patterns. I've factory reset the TV with no change. It's been a while since I've repaired a TV, and I'm not sure where I should start. Maybe TCON? Just looking for ideas. The problem allegedly started when the TV was moved.

Thanks in advance for any help.

[nomoresonys]

Re: Samsung ln46b530p7n dark colors messed up

Wonder if something became loose while moving, maybe take the back off and check the tcon connections, maybe clean them too, with a pencil eraser or ISP alcohol, carefully they can be delicate.

[RoboDisko]

Re: Samsung ln46b530p7n dark colors messed up

I forgot to mention that I have reseated both ends of the LVDS cable, as well as the 2 cables from the tcon to the 2 top distribution PCB's that probably have a name that I don't know. This didn't change anything. Didn't inspect them carefully though, so I might go through and inspect/clean.

[nomoresonys]

Re: Samsung ln46b530p7n dark colors messed up

Hard to see a flaw with the test patterns, can you post a picture of the flaw while on a tv program or other display? maybe try a firmware update, do you think it might just need recalibrated/adjusted after the reset? but I guess it was there before the reset.

[RoboDisko]

Re: Samsung ln46b530p7n dark colors messed up

I took some more pictures of the issue, and then the issue went away and the colors were normal. So far it's stayed that way, but I'm mostly expecting it to go back at some point. So now it's fixed? I'll update you if it comes back and I need some input.