Very Dim Asteroids Monitor Problem

I've been Looking at this early verion of the G05 with the extra regulator
PCB and the problem is the monitor is very dim. The tube is fine, but the
Grid-1 voltage is only 10v when the brightness pot is turned all the way up.
Normally is should be around 30-35v for a good picture. The Z-amp voltage
is only about 70v when it should be around +90v, but I think that should
still be ok.

This is probably a simple question, but if the most I'm getting is +10v with
the brightness pot turned all the way up, what should I be checking for?
I've checked the brightness pot and it's ok. The voltages coming from the
regulator PCB look ok. The tube and yoke are fine. And the monitor has new
electolytic capacitors. Anybody?

Here's the manual if anyone cares to take a guess.
http://www.spies.com/~arcade/manuals/G05-tm146.pdf

Thanks.

Matt

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Received on Fri Jan 24 00:24:26 2003