I have a 61A750 I bought back in 2008 that recently developed the white/black dot issue. I replaced the DLP chip which resolved it, but I am having a strange problem that did not exist before, which is that I can't change the LED control or color temperature settings.
I am able to cycle through each setting, it's just that there is no difference to any of them. It is acting as if LED control is stuck on max/auto, because everything is overly bright and I can see it adjusting the backlight by itself. Also, color temperatures don't seem to have any difference when I cycle through them. The picture is similar to the 'normal' temperature setting no matter which I pick. (meaning Cool and Warm should look very different, but look the same). I tried all this on both the movie and standard modes.
It is also making a buzzing sound, which happened before if dynamic mode was selected but was fine on standard or movie. Now it's doing so on all 3 modes. I am curious if both of these things are related.
Thanks for any ideas
Edit: I also tried resetting picture settings and a factory reset through the service menu
Last edited by theslug; 05-31-2020 at 07:52 PM.