tech : WG monitor problem? Pengo problems

[Joey]

I'm trying to diagnose a 'dead' Pengo that I bought. The cab is a mess,
so I'll probably have to part it out..trying to see if the board is
good.

The inputs to the monitor were plugged into connectors on the power
supply (marked sound amp in and out) They actually fit pretty close.. I
plugged them back into the monitor pcb, the only was they would go..
Monitor chassis has WG411501 on it.. Looks different that 4600 series..
???

I rigged a switcher to the harness, supplying the proper voltages, and
the monitor is still fed thru the iso transformer.

I'm getting vertical green 'stripes' that dominate the display. They
differ and move a little bit. Thru that garbage on the screen, you can
see activity, corresponding with coining it up, starting the game etc..
.It appears that something's going on, but the video is really goofed
up. Any clues?

Thanks for reading this mumbo jumbo..

Joey
joeycuda(at)hotmail.com

[andyr]

You have a bad vertical output transistor... You might as well recap the
monitor when your are replacing it... (On the 46xx they might be on one of
the cards btw...)

Andy