Samsung LCD TV LN-T5265F Black Screen Diagnosis Help
by gonefishin09 - 9/15/09 12:57 PM
my LN-T5265F stopped displaying video yesterday. It is out of warranty, so I am hoping to diagnose the problem myself before having an on-site service visit. I created a short demo video on Youtube here:
Here is the sequence of events when I turn on the set:
-press power button, hear click, see blinking red LED
-after a couple of seconds, I see a faint glow from the set, i.e. it changes from black to a dark gray, so I think the backlight is on.
-at the same time the glow starts I hear a faint buzzing/crackling sound -- it sounds like very quiet electrical arcing (but I don't smell anything)
-a second or so after the buzzing starts, the video comes on very briefly -- less than a second, and then goes black. At that point, the buzzing stops, but the audio from the programming continues.
Have tried a total set reset with no change (not sure I did it correctly -- pressed remote control "exit" for 12 seconds, then down arrow, then enter ???) Have also tried unplugging for several hours with no change.
Is this enough info to make a definitive diagnosis of the problem? Maybe the power supply board? Or do I need to gather more info.