Re: Samsung PN51F5500AFXZA issue - Power board thermistors cooked?

Tried plugging it in without main board. No backlights came on and no click from the power board.

Re: Samsung PN51F5500AFXZA issue - Power board thermistors cooked?

With the back off, I can hear a click and a high-pitch tone coming from the power board, when the LED blinks. It appears it's trying to boot itself up to some point, maybe a self check, when power is applied, but there's some issue.

Anybody have an idea on whether it's a power supply board or main logic board issue?

Thanks!

Hi everybody. I recently acquired this 2013 Samsung Plasma TV, model PN51F5500AFXZA for free because it wasn't working. The red LED just continuously blinks when plugged in.

The thermistors on the power board look cooked, with some discolouration of the PCB around them. I've attached an image of the board. The thermistors show as shorted when connectivity tested with multimeter.

I tested all the diodes I could see, they all appear working, no shorts. No bulged caps. Nothing else looks shorted or burnt out. The fuse looks fine and tests shorted with continuity....

Re: New Members - please post your introductions here

Hi everybody. I'm a computer engineer by trade, found this site looking for info for Samsung plasma TV I recently received for free. Thermistor problem...