25th Anniv. Pacman cabaret problems! UGH!

khabbi

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Well, I have a very nice 25th anniversary pacman cabaret that has recently started giving me problems..

It worked fine up until a few weeks ago when I accidentally left the game on for about 20 hours... I usually don't do that, and hell, I figured it shouldn't be an issue, but it was... When I actually found that I had left the machine on, I heard it resetting to the boot up screen..

Since then, I can turn it on, and sometimes it will be fine for a while, but if I leave it on for 10 mintues (times varies) it will reset and lose all memory (all scores go away, and it goes back to coin play and off of free play). I have never had it reset on me while playing, but then again I haven't had time to really dig in and play some long games on it since it started doing this.

Recently, I turned it on and it just kept resetting over and over again.. as shown in this video.

Just want to get everyones opinion on whether this is a PCB issue or power supply issue.. what do you guys think? Is there anyone who fixes the PCB's if that's the case?

Here's the video



Thanks in advance
 
power supply. had the same thing happen on our 20th anniv. Ms. Pac/Galaga. it would reset at random times throughout the day until I adjusted it WAY lower than what it was. it could also mean yours is too low, based on the frequency of it happening.

I aimed for like 5.05-5.10, since it's such a small board.

on a sidenote, the other issue I had with that little board was with the volume -- there's a volume knob on the board, and a volume pot inside the coin door. make sure the board one isn't hopped up, otherwise your sound will come out distorted and shitty.

I played the game tonight, I feel it sounds pretty accurate to our old Galaga (and I do mean, OLD) back in the day.
 
ok, I'm not very good at metering, can anyone tell me where I need to measure the volts and adjust it at? I'll post a picture of the power supply later today.

Thanks!
 
You can usually get a rough idea of the voltage by simply placing the Black multimeter lead on the GND (not FG) screw of your switching power supply and then placing the Red multimeter lead on the +5 VDC screw of the power supply. Make sure you have the multimeter in DC Voltage mode prior to connecting the leads.

Here's a picture of a standard switching power supply, and Bob Roberts was nice enough to put the colors of the multimeter leads you will use next to the terminals. :)
80-0064.jpg

Then you can adjust the switching power supply (it will either have a knob or screw) to increase the voltage. You'll want the voltage to be right around 5.00 Volts, no higher than 5.20 volts.
 
Ok, this is what the power supply look like, not what I'm used to.. Was hoping to get more input on how and where to test this. Yep, I'm a newb, but if I can check the volts and adjust them myself to get this running, that would be great!! Wife wants to play some Ms. Pac!! :)

pac55a.jpg


pac55b.jpg


pac55c.jpg
 
The pins where the black wires plug in are Ground, the pins for the red wires are the 5V and the orange wire is for 12V.
 
Are there any markings on the board near the blue and white component on the power supply board? That blue and white guy looks like it might be a +5v adjustment potentiometer to me.
 
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