Chosen Solution
I have a UN55MU6500AFXZ with a power problem. The other day the TV got unplugged and since plugging it back in I can’t get a standby light or the power to come on. The following things have been checked:
- fuse checked wih multimeter and is good
- when T Con board is unplugged and power supplied to the TV, the LED backlight will illuminate
- whole power board checked with multimeter… capacitors etc. One thing I, and the person helping me aren’t sure of is the 13V output to the main board. It is showing a pulse of voltage when under power ranging from 0-20V. Does anyone know if this is a normal operation, as if it is sending a signal to the main board and looking for a response, or if this is an indication of something wrong on the power board? Anything else we can check??
@jonnymak this “I can’t get a standby light or the power to come on” is usually a sign of a bad power board. you want to go ahead and post some good images of your boards with your question. Thaht way we can see what you see. You also want to point out where you measured those 13V etc. Use this guide Adding images to an existing question for that.
