Hello there. I have a problem with my samsung tv, le37s86bd I had problems with red and ghosty picture, i replaced t-con and now it's ok. I also have another problem (it was before replacing t-con). I have no picture on dtv, only audio*. This happens only on dtv, if i view through scart hdmi or anything external it works fine. The menu/gui works ok on dtv. It finds digital channels on search, but not have picture. *I'M NOT 100% PERCENT IF I HAVE AUDIO ON DTV because i have a problem in tv speakers that i'll fix tommorow. I tried factory reset from menu, reset from service menu, no result. So I suspect the digital receiver part. I would like to know exactly which part is on the main board. If someone knows something i don't know or can suggest a useful test to do, i would like to hear. Also please, in respect of the forum and others, if someone DOESN'T KNOW, i would appreciate to not post anything. Thank you.