Samsung PLASMA Stuck In Standby - ppm42s3q

[3guk]

Hey Guys,

Wondering if there were any common faults with these things, I have 2 of them sat on the bench, haven't opened them up yet but both seem to be stuck in standby, the buttons on the bottom of the unit do nothing and neither does the remote.

These screens are both from the same place, and were working well up until recently, would rather get them working than just bin them, especially if it is just a power supply or a relatively cheap part to source !!

Any replies much appreciated !!

Samsung PLASMA Stuck In Standby - ppm42s3q

[minnie]

You need to check the power supply. I'm thinking this is the model you need to look for the 5vdc stand buy voltage that goes to the digital main board.

[3guk]

I think I have heard about this fault before, is this where the 5V output is low when metered ?

I don't suppose you know the point to check, I'm fairly new to servicing PLASMAs but figured it wouldn't be all that different to the usual stuff I service.

[minnie]

Check the plug going from the power supply to the digital main. It's like a 8 pin white plug.

[3guk]

Forgive me for asking but what is the digital main ??

[minnie]

The board under the power supply.