Re: Death Race Monitor - making some progress

Ok - looking at the schematics here ...
ftp://ftp.rossiters.com/pub/ball-brothers-TG20-23.jpg

Under where it says "vertical coil" - I would expect to see some continuity
between pin 6 and 12 with a small amount of resistance because of RT1 right?
I'm not getting any reading whatsoever. Even if I put the ohmeter on a really
high setting. So... if this yoke is truly hosed, I don't know how I'd get it
fixed. Would it be possible to get a replacement yoke somewhere off an old
black and white tv? I wouldn't expect it to be anything complicated.

Thanks...

Matt

mccullar@flash.net wrote:

> >Is there anything obvious that maybe I'm overlooking? I even tried
> >replacing the vertical deflection transistor.
>
> Is the vertical yoke still in one piece? See if you're getting continuity
> between the yoke connection from the circuit board, through the yoke and
> back. Bad solder joints are common on pins that carry a lot of current,
> particularly yoke connections.
>
> If that's okay, check for open resistors. When a semiconductor shorts, it
> often cooks a load resistor. Sometimes that's obvious: frying sounds,
> flash, burning smell. Or the resistor may just open with no visible signs.
> Check the resistor values (out of circuit, if possible) in the vertical
> deflection circuit.
>
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Received on Fri Jul 13 02:50:34 2001