Re: Dead Asteroids

On Tue, 11 Dec 2001, Phil Morris wrote:

> Hi Mark,
>
> > > Should I wait and try a known working Asteroids board that I have on
> > > order, or look into seeing if there is a fault in the monitor circuitry?
> >
> > First of all, since this is a hacked Lunar Lander board, you have no idea
> > what the current wiring of the cabinet is; Lunar Lander and Asteroids have
> > some pinout difference. Check the pinouts on www.spies.com/arcade and
> > double check your wiring to see if it matches that of Asteroids. Only
> > after verifying this would I plug in a stock Asteroids board.
>
> Will do that. Probably wise as I don't want to damage the working Asteroids
> board when I get it. :)
>
> > Second, the monitor could be having problems of it's own. Do standard
> > maintenance on the monitor, which includes ordering and installing a cap
> > kit, replacing the deflection transistors, and resoldering the connector
> > pins. Do this before further testing the monitor.
>
> This is a G05 801 - is there a cap kit or similar for this earlier model?

...you can always read the value of the capacitors and order them
separately. I'm not sure if there is a cap kit difference between the 801
and 802 (someone else help out here?)
 
> > Third, you didn't mention anything about the power supply; verify that all
> > the voltages on the AR II board (or whatever power supply the game is
> > fitted with now) is outputing the correct voltages.
>
> Will do. There is a definite low level but noticeable hum from the PSU.
>
> > Once you have done these things, plug in the new Asteroids board and give
> > it another try. The chances of your game working now will go up by a
> > factor of 10. Most likely the LL hack board is too far gone, and
> > probably far less documented for repair at this point, so I'd sell/ebay it
> > to recover some of your costs.
>
> Or maybe I should remove the Asteroids mods and try and get it working as a
> LL board?

Well, if you are up for that, you could try that too.
 
> BTW, the LED on the main board is also lit.

Then likely it is getting at least the +5VDC. However, I think the other
voltages are necessary to even get a display.

-- 
Mark Jenison
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