Need Star Castle Help

Perhaps someone can give me some direction with this Star Castle that
I'm working on.

The original problem was - The LED on the CPU board was staying lit.
Which, I assume, is an indication that the game is stuck in reset mode.
I was getting +5v across the board. Distorted sound was coming out of
the speaker - and the CRT was glowing. No picture of course.

So - I took a logic probe and tested all of the chips within the reset
circuitry. Everything seemed good, except the reset pins were reading
low instead of high. So - on the chip at A2 on the board - I tried a
little experiment. I forced the reset pin to be high instead of low.
This did indeed cause the LED to go out - but the game still didn't
work. To make matters worse - somehow the circuitry shorted out. Now I
only get .6v across the board. - Yup, I'm a greenie.

So.... I need some expert advice on the following.

1) I have a logic probe, an Eprom Burner, a DMM. I probably should
start becoming more familiar with a scope. Does anyone have
recommendations as far as getting a nice scope to work with? - And more
importatnly, does anyone have recommendations for any other tools that
might be helpful? I would love to get the Cinematronics exorsizor - but
I'd only be dreaming I suppose.

2) As far as the problem I mentioned above. Any suggestions as to
where to go from here? I have the manual/schematics and can get any
parts I need.

Thank you very much.

Matt
Received on Tue Oct 6 20:43:57 1998