Re: Samsung PN64D7000 No Power

Update....

Received a new ysus board today and just installed it. It worked!
TV is powering up and all functions seem to be back to normal.

Thanks for all the help in tracking this down guys. Much appreciated.

I've got a pesky little vizio that wont power up so i'm sure i'll be back.

Re: Samsung PN64D7000 No Power



I think my issue is being narrowed down to the y sustain. Yes, the logic control board has one green LED that blinks about once every couple of seconds....

Re: Samsung PN64D7000 No Power



Sorry tom, been away for memorial day. I tried what you suggested but no change with either board disconnected....still 6 blinks when first plugged back in. Only change is when the cable from the logic control board is diconnected....

Re: Samsung PN64D7000 No Power

When the TV is first plugged in the voltage reads above 200v dc but quickly drops to about 20v and then slowly continues to below 10v

Re: Samsung PN64D7000 No Power

The plug on the left is direct from the power supply. The plug to the right goes directly to the xsus....

Re: Samsung PN64D7000 No Power

Thanks for the response tom.

I did as you suggested above but the only time I can get the TV to change how it responds is when the ribbon cable in the second picture is disconnected from the ysus.

When the boards are disconnected as you suggested, i still get six blinks when the TV is first plugged back in. When the ribbon cable is disconnected the red power light stays on and will turn on and off with the power button, but I have no other TV function.

Hello all, new to forum and have already gained quite a bit of knowledge today but need a little more.

The TV simply died while watching and will not turn back on. When the TV is first plugged in, the power light will blink 6 times but that's it.

Reading a previous thread with a similar problem and similar model Samsung, it was stated that there should be 3-5v on the "PS-ON" pin. That voltage is not present when all boards are connected. However, I can disconnect the cable going from the logic control board to the Y-Sustain board and the voltage returns...