We heard a popping sound and then foul smell, electrical burning so we unplugged the TV.
It sounds that a capacitor inside the circuit of the has failed. It might have bursted. Check the power supply regulator board for the trouble. Normally electrolytic capacitors at this section should be suspected.
SOURCE: samsung 50 inch plasma
I have found the most common problems with the symptom you have described, to be the SMPS PCB. Sometimes the Y Main will cause the power supply to short out and lower a voltage in that area. Your set has a two year warranty. Call 1-800-Samsung to find an authorized servicer in your area.
SOURCE: on one minute then POP loud noise, burning smell
Loud popping and loss of power is common on plasma TVs and is usually either the Y sustain or Z sustain boards or buffers; in these instances the damaged part will be quite evident.
If this is an LCD you might have degraded insulation on one of the pink/blue backlight power leads causing high voltage to 'arc' to the chassis.
The loud bang and smell is actually to your advantage as in these circumstances the damaged part is usually evident. It'll just be a matter of popping the back off and sleuthing around. :)
SOURCE: ASTV3619WS went pop and burning smell
replace capactors on mains power board they will have raised tops and look like little batteries with white kine on one side replace with same value e.g (2000.mf 25v) make sure line is on same side take picture to help
SOURCE: My Sony plasma tv made a pop sound and now picture is dark.
You will need the y and x sustain boards replaced, possibly the buffers. very expensive repair. you can replace one board but its best to do all of them.
SOURCE: vizio gv47l lcd a popping sound and tv when dark and no sound
This sounds like a main board issue to me.
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