Samsung UN46EH6000F lightning strike

[rca2000]

Many modern flat panel sets (and some CRT-based sets, for that matter), do NOT use a relay for turn on--they just "gate on" the run supply, usually with a pulse from the signal board, rarely over a data line.

If...your backlights are running, and you have all of the run volts from the supply..but NO turn-on pulse from the signal board..(if it is strying high or low--and not changing wiht the power button)--THEN you likely have a signal board issue..


BUT..

If this set has a "Tcon board), (near the top, usually of the panel, though I have seen them at the bottom I think), the UNPLUG this--and re-check to see if the set will power off. it could have a data corruption, killing the on-off command.

Also--if the IR sensor is on a seperate board from the keyboard--unplug it. Then do the same--one at a time--for the keyboard.

FInally..unplug the BL inverter/driver board. There is a CHANCE --it may be corrupting data.

If not luck...likely bad signal board.

[rlovison]

Originally Posted by rca2000

BUT..

If this set has a "Tcon board), (near the top, usually of the panel, though I have seen them at the bottom I think), the UNPLUG this--and re-check to see if the set will power off. it could have a data corruption, killing the on-off command.

Also--if the IR sensor is on a seperate board from the keyboard--unplug it. Then do the same--one at a time--for the keyboard.

FInally..unplug the BL inverter/driver board. There is a CHANCE --it may be corrupting data.

If not luck...likely bad signal board.

Firstly, thanks to everyone for advice and help.

I unplugged the t-con board and still I have no control with the power on/off switch. There isn't any keyboard as the power switch is a joystick like device that has multiple functions. The IR sensor is part of this switch. The driver for the LEDs is part of the power supply.

I am supposed to be getting 3 volts leading to the power switch from the main board though I'm only getting a tenth of a volt.