Re: Samsung LN55B640R3FXZA issue after power outage

Thanks for all the help, I couldn't find the logic board on shopjimmy but was able to get one on Ebay fairly cheap and the tv is back together and working.

Great group here and very helpful.

Re: Samsung LN55B640R3FXZA issue after power outage

Ok tried the factory reset with no results, the standby light stayed on but no audio or display.

Re: Samsung LN55B640R3FXZA issue after power outage

First of all thanks for all the replies!

Sorry its taken me a bit to reply.

I removed the orange cable from the mainboard and still have the same symptoms as before.power tune doesn't play and the standby light goes off.

Anything else I can do to narrow down the problem?

Good Morning all,

I have a Samsung LN55B640R3FXZA that will not power on. We had a power outage and everything came back on except the TV. The red standby light comes on but once you press the power button on the remote it goes out and nothing happens. No power on tune, no audio, just a black screen. I originally thought it was the PS but didn't see any visible damage. When the ribbon cable is removed between board with all the inputs/outputs (logic board?) and the PS the screen lights up.

I know very little about electronics in general but would like to know more...

Re: New Members - please post your introductions here

Hello all, New to the boards. Driven here by research on fixing my TV. I don't have a background in electronics but several years in computer/network hardware and learning things of interest. Right now I'm interested in learning how I can save my TV