So I dug this set out of my closet. Forgot how long it has been there. Plugged it up, got a display with the smart splash screen and vertical green lines. Did it the sloppy way and chanced a tcon since it was cheap and might be the cause of the lines. When it arrived, I plugged the set in and got no display before installing. Unplugging the main gives me backlight so i can see the panel and led's seem to be good. At this point I went back to test voltages and they checked out except for my 13v line which is @ 12.85 and drops to 12.82ish when the backlight is on. I also probed the panel vcc point...

Re: Samsung un46c8000 broken board

Just joined while looking for info and thought I would pop in and give my 2 cents. Definitely try freeze spray/upside-down compressed air, heat, and even light physical pressure on components in question (except for when touching it would be dangerous). In my experience with my sets, the IC that controls HDMI is bad. This is assuming all your voltages check out. But as has been stated before, troubleshooting and work on mainboards is pretty complex. Without a few proper tools and a little help you have a high risk of seriously jacking up the board,...