LED DLP with puzzling behavior
Posted: Fri Dec 02, 2016 8:32 pm
Samsung LED DLP. Swapped out the bad DMD chip for a new one, and noticed that the capacitors in the power supply were starting to bulge, so I de-soldered 5 of those and replaced them with new. However, now I am having trouble getting the set to behave normally. I am using component video input from a cable box until the HDMI cable I ordered on line arrives. Let's assume the set is at normal "rest" state, with the red stand-by LED lit. When I go to turn the TV "on" it does not light up. BUT, if I then unplug it and plug it back in I can get it to display a picture. Furthermore, on some channels the image will FREEZE, but the sound will continue. If I change channels, the picture will then go back to "normal." Often, my Samsung remote will not seem to function, but other times it works just fine. By unplugging and then plugging the set back in, I seem to be able to "reset" the tv and get it to work, freeing it up from a dormant/frozen state. Before I start throwing new boards into it, I'd sure like to know what's causing the image to not generate upon start up, to freeze when first viewed, to be "reset" by pulling power and then restoring power, and to work perfectly once it gets "going." Any thoughts or suggestions would be most appreciated.