Re: Lg 50pc3due plasma-- no video, audio ok

Replaced Zsus board as above, still no picture. I now notice that the led , on the control board (that shows the oscillator working) turns on for a second or 2 during start-up,then goes dark. Then it shows for a second or two during shut-down sequence. Time to replace the control board??
thanks
Mike

Re: Lg 50pc3due plasma-- no video, audio ok

checked fuses, all ok. replaced z-sus board and now screen flashes white for a 1/8 sec both when set is turned off or on, but no picture/raster on screen...sound OK. Any help appreciated.
mike

Re: Lg 50pc3due plasma-- no video, audio ok

is there a simple way to pretest this board prior to board swap? perhaps using a vtvm or vom?

thanks for the help
mike



























'pretest" the

Re: Lg 50pc3due plasma-- no video, audio ok

I checked again, but I don't see any fuses on the Z-Sus board...All other fuses in the set check good.

Greetings All,
I currently work on jukeboxes, pinball machines, and computers, but this is my first attempt at a non-crt television.
I currently have this Lg 50pc3due, 2006 Plasma, with audio and no video. vs, va both ok. Very little service information, but I believe it is a close relative of the 50PC1DR. I pulled up the LG Training manual for the 60py2dr (and 50pc1dr), page 52, and printed out the chart of expected voltages. All voltages, including those on the SMPS, Control board Voltage regulators, show ok and the osc is working. The only place they are wrong is the P1...

Re: New Members - please post your introductions here

Greetings All,
Elderly Geezer here still playing with all things electrical