Centipede coin door lamps not working, and what are these 2 wires?

keithsarcade

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Centipede coin door lamps not working, and what are these 2 wires?

New bulbs, but the meter shows no power to the sockets. Traced the wires all the way to the power supply, still nothing. All fuses look fine.

Check out the 2 wires in my hand (black and white). These are running 5V but I cant see anywhere where they connect to. Are these meant to power the lamps? If not, can they be used for this? The wires on the sockets are all white with blue spots. No reading on those either.

Thanks in advance.
 

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There are two different test switch setups, and they go to the one that you don't have. The one you have is on the back of the coin door.
 
My Pole Position is doing the exact same thing. No power to the coin door lights and the coin meter doesnt do anything either. Switches work fine. I hope someone can provide some insight.
 
There are two different test switch setups, and they go to the one that you don't have. The one you have is on the back of the coin door.

So this is for another test switch, and its getting 5v? Strange. Well can I use them for this purpose?

My Pole Position is doing the exact same thing. No power to the coin door lights and the coin meter doesnt do anything either. Switches work fine. I hope someone can provide some insight.

My coin counters are working fine. Only the lights are out.

did you just look at them, or did you pull them out and meter them?

Didnt meter them, but they arent blown, no loose caps.
 
You could have a fuse that _looks_ good, but isn't. A meter will tell you for sure. Fuse F6 on the power brick is the one providing power to the coin door lamps. It's supposed to be a 4 amp slo blo fuse.

Following the schematics:

Coin door lamps are white-blue wires. Bulbs wired in parallel. Wires go to pins 19 & 20 of coin door connector P55 (the black half in your picture).

Those wires then go to a 3 pin connector P40 on pins 2 & 3. From there they change colors to Blue and Blue-Green.

Now we arrive at the power brick on connector P5 pins 8 & 9. Then onto the fuse.
 
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No readings at F6, changing the fuse does nothing. Took out the power supply and looked it over. Can't see any problems. What am I missing?
 
You should be getting 6 volts ac at power brick connector P5 pins 8 and 9. If not there's a problem in the power brick assembly.

You did take the fuse F6 out and check the continuity of it didn't you?
 
You should be getting 6 volts ac at power brick connector P5 pins 8 and 9. If not there's a problem in the power brick assembly.

You did take the fuse F6 out and check the continuity of it didn't you?
Yep, 5.9 at pins 8-9, and now suddenly, same readings to the sockets, bulbs are working now. Checking for shorts, cant find anything. Strange.
 
probably was a faulty connection somewhere and moving stuff around or replugging fixed it. i had this happen in my Mortal Kombat, though it was power to the switching PS and not just the coin door lights.
 
Yep, 5.9 at pins 8-9, and now suddenly, same readings to the sockets, bulbs are working now. Checking for shorts, cant find anything. Strange.

not really strange, but in fact, perfectly normal. When troubleshooting old games it is usually something easy and stupid as a loose or corroded connection. Easy things to check first.
 
not really strange, but in fact, perfectly normal. When troubleshooting old games it is usually something easy and stupid as a loose or corroded connection. Easy things to check first.

Could've been a corroded fuse holder? The act of replacing the fuse a few times could've cleaned it enough to work. Nothing a wire brush (with the machine UNPLUGGED) can't fix. A couple seconds on each fuse holder can save you headaches down the road. :)
 
No corrosion anywhere. This puppy is one clean Atari cab. Fuse block was a little dusty, but I cleaned it and switched fuses several times until it worked. Oh well.
 
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