Need a little assistance on Death Race Monitor

I'm a little stuck on a problem here. I'm not getting any vertical
deflection. All I get is a thin horizontal line - within that
horizontal line, I can see things moving back and forth. I was
wondering if someone could look at the schematics here
ftp://ftp.rossiters.com/pub/ball-brothers-TG20-23.jpg.

The large vertical deflection transistor is fine. If you look on the
schematics at the section labelled "vertical oscillator" - at the base
of Q112 I'm getting zero volts - plus I'm getting zero volts where the
the choke is below it. Shouldn't I be getting some kind of reading
around that choke? Just looking for some ideas - I'm not exactly sure
what the purpose of that choke coil is.

Thanks...

Matt

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Received on Tue Jul 10 09:32:36 2001