Spy Hunter Power Supply cuts out

[newbie]

Archived from groups: rec.games.video.arcade.collecting (More info?)

Hi all,
I was enjoying my newly acquired Spy Hunter upright tonight after
reseating the chips, replacing the ribbon cables and a cap kit in the
monitor. All was well (even the Cheap Squeak works like new!) and I was
enjoying the best game I've had in my life when "zap" the game went
dead. I lost everything except the monitor (lost picture but the
monitor was still glowing at the neck). I went around back and went
looking about and realized that the "black box" on the original power
supply was hot...very hot to where it burns your hand if you leave it
on for a second or two. I checked for voltage at the fuses on the
"power brick" and I have none. If I let everything cool down it will
work fine again for 20 or 30 minutes then do it all again. Will
replacing the capacitors help or do I need to find a replacement
voltage transformer? What about a switcher... have they perfected them
to get rid of the audio hum that I've been reading about? Any help
would be appreciated!

TS

 

[Guest]

Archived from groups: rec.games.video.arcade.collecting (More info?)

It's likely a failing transistor (the metal oval located in the black
heat sink). I'd strongly recommend buying a Midway power supply
rebuild kit at The Real Bob Roberts. Prety inexpensive (around $20 I
think) and has all the caps, transistors, and plugs to make in run like
new.

Every time I've had a Midway power supply issue of the vintage (Tron,
Spy Hunter, etc), it's fixed it without a hitch.

Ben

 

[Guest]

Archived from groups: rec.games.video.arcade.collecting (More info?)

Another solution is the MCR power supply conversion kit from
ArcadeShop. More pricey (at $75), but a reliable, modern, and
easy-to-install solution.

As for the hum...yeah, there is that. I'm still looking for a way to
get rid of that.

Still, I think switchers are the way to go. I replaced the Midway
medium power supply in my Bump N' Jump with a switcher as well after
going through half a dozen medium power supply boards with no luck.

-Dave Ellis
http://www.davesclassicarcade.com