WHERE IS POWER BOARD FOUND IN THE UN55B8000

A popping sound as you describe sounds as if your tv blew a couple capicators on the main control board. More than likely , you are needing to aquire a new main circuit board.

Most likely your power supply is defective. I would suggest you check the fuse on the power board. If it is blown, you have a problem with the power supply

FIXED!!..I had the same problem. Power board looked fine (not blown capacitors) It started after a moving...it was just faulty (loose) connectors from the powerboard to the mainboard..... I just unplugged and plugged them back firmly.

Three thoughts---check for short to ground with fuse removed and power off (unplugged) on both sides of fuse.

Use a original type fuse---generic ones often blow for no reason.

Consider replacing the board if you can confirm issue is on it.

First if you are able is to examine the power board---look for any signs of damage or puffed up filter caps..........

If all pictures including the menus appear in double than most likely your T-con board or T-concable are defective. The T-con is located on the upper portion of the rear of the LCD panel itself. Here is a link where the board and the cable can be purchased. Note there are a few different versions of the T-con board and they wil not cross with each other. There is a bar code on the T-con board with numbers that corralate with the correct part number. Follow that before ordereing : )

http://www.shopjimmy.com/catalogsearch/result/?q=UN55B8000

My tv too

samsung usually doesnt have a code. hide a switched power strip or something behind the tv or unhook it somehow when you're away. you can lock cableboxes and sat boxes sometimes, but i think that panasonic code is a rare thing

Try a firmware update from Samsung. If that does not work, replaced the Main bd.

It should be problem with Power supply of LCD TV Replaced New Board of same part number.