Vizio P50 HDTV20A No VA/VS

[taydu]

Hello All,

My Vizio Plasma TV model P50HDTV20A stop working, no display. TV seem to turn on and off from amber orange to green.

After taken apart the TV i check for VA and VS when it on (green light) there no voltage on VA or VS. Could it be PSU problem? there no budge caps that i can see.

Thanks

[tom66]

Re: Vizio P50 HDTV20A No VA/VS

Check Va and Vs with Y-sus and Z-sus disconnected.

[taydu]

Re: Vizio P50 HDTV20A No VA/VS

I've disconnected the Y and Z board that connected to the PSU. also the Green LED on the PSU is flashing 1 times indicated something wrong with VA ?

[tom66]

Re: Vizio P50 HDTV20A No VA/VS

Is this a Samsung, LG or Panasonic panel?

[taydu]

Re: Vizio P50 HDTV20A No VA/VS

The Panel, PSU, Y and Z board are from Samsung

PSU part number is : LJ44-00132B

[tom66]

Re: Vizio P50 HDTV20A No VA/VS

Can you get pictures of the power supply, and of the connectors on PSU to main board?

[taydu]

Re: Vizio P50 HDTV20A No VA/VS

here are the pictures

[tom66]

Re: Vizio P50 HDTV20A No VA/VS

All the other voltages good?
Is there a pin marked VSON?

[taydu]

Re: Vizio P50 HDTV20A No VA/VS

Yes there is a VSON pin, also im only getting 5V weird nothing else

[tom66]

Re: Vizio P50 HDTV20A No VA/VS

Does this change when the power button is pressed?