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Ah...Another GOOD Find?
FrizzleFried:
Today is the day I get to go out and drill out the locks....and then inspect for loose connections. If it isn't a simple case of a loose connection, I have a feeling that I will have some work cut out for me as I am not entirely sure how to run down the problem (this is the first cabinet I have gotten that has (I hope) a PCB)...
CheffoJeffo:
Super score!
Check your voltages (if you don't have multi-meter, get one now and get a copy of the Joust manual while you are at it) and you may want to look into an adaptor to use a switching power supply instead of the linear supply that in there (hey, I love the old William supplies, but there are enough things to worry about with old Williams machines).
Joust Manual:
http://happycampers.to/arcade/manuals/
Power supply conversion kit can be found here:
http://www.arcadeshop.com/parts.htm#Power
The wiki has some links to good Williams-related repair info:
http://wiki.arcadecontrols.com/wiki/Restoration
Cheers.
FrizzleFried:
I had about 15 minutes to kill before I clocked in (I work from home - w00t!) so I went out to see just how hard it would be to get in to the back of the unit. 5 minutes with a drill, 5 minutes with a flat head screw driver (after trying a number of keys as suggested) and with a little encouragement, the lock loosened up...a pair of vice-grips later and the door was off!
And OH was there a treasure of stuff to be had inside. It seems the bottom of the cabinet had NEVER BEEN OPENED...I'd had thought the top door hadn't been opened either until you look at the SCREEN (or is that the focus?) knob at the right hand side of the chassis and you can see something has touched that part of the monitor more recently than 1982.
Here is what I found:
FrizzleFried:
...and one last shot.
I didn't get a chance to even really look at the insides much. Very dusty for sure.
The old owner said when they got it all it would do is produce a DOT on the screen. Right now I get nothing.... I am guessing my first step is to examine the connections and the fuses....right? (forgive me, this is my first cab with an actual PCB inside!)
FrizzleFried:
UPDATE: I took a look and fired up the cabinet with the back off. The powersupply board has 3 LEDS, labeled 1 2 and 3...2 and 3 come on but 1 doesn't. A visual inspection of the fuses show no apparent blow outs. The PCB is getting zero power. I have a switching power supply from a Robocop, how hard would it be to convert this cabinet to use that? Any suggestions as to where to look for the problem?