20 Most Recent Samsung PN51F8500AF 51" 3D 1080p Plasma TV - 16:9 - HDTV 1080p - 600 Hz / ATSC - 1920 x 1080 - Dolby Questions & Answers

First, check that the power cord is properly connected to the TV and the wall outlet. If it is, try plugging a lamp into the same outlet and see if it works. If you have power from the outlet. it is most likely the power supply board. The red LED should be on when the TV is turned off, or unplugged.

The t con board or the LCD panels is faulty. Can confirm only by replacing the Tcon board. If you wish to know more about Tcon board problems and troubleshooting then check the following link. http://electro-medical.blogspot.com/

Reload or update the driver from the manufacturers website!

Please check the flat cable connections between TCON board and the LCD panel. If this is ok, then it is either the TCON board or the LCD panel itself. Good luck.

Check and replace the backlight inverter board. Do not think that it works only with some capacitors. The inverter transformers are the main component on that board, and always gets shorted inside, and is irrepariable.

Hello. You can check HDMI cable in this case. If you're using an HDMI port that's not working well or has been damaged, it could result in a darker-than-usual screen. If you switch the cable or change devices and the TV is at a regular brightness, this is the case.