Basic question - Can you put a 250V fuse in a 115V slot?

Pinwizkid

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Basic question - Can you put a 250V fuse in a 115V slot?

So even after looking online, I can't track down a 115V 1/2A Slow Blow fuse for my friends Galaga, but of course, I was able to find a 250V one at Radio Shack. Is this a big deal?

Thanks,
-BB
 
That's fine. The voltage rating of a fuse isn't what's important - it's the current rating. Most modern fuses are going to be rated at 250v.

-Ian
 
Yes you can replace your 115V 1/2 amp with a 250V 1/2 amp fuse.
I think the bigger question is why did the fuse blow in the frist place?
Someting has drawn more than a 1/2 amp on your system.
 
Yes, the primary purpose of a fuse is to stop the device from drawing so much current that it catches fire and burns the house down. It is not there to protect the device from damage even tho it might.
 
I made a separate thread about this a few days ago. The issue at hand is that someone replaced the power supply in my friend's Galaga with a switching Power supply, but simply botched it - Game works, but marquee light is dead (even replaced fixture), power switch only turns off the monitor and not the MPU.

I just ordered a switching power supply kit from arcade shop - hopefully installing this will act as a giant UNDO from whoever tried to replace the last one.

-BB
 
I made a separate thread about this a few days ago. The issue at hand is that someone replaced the power supply in my friend's Galaga with a switching Power supply, but simply botched it - Game works, but marquee light is dead (even replaced fixture), power switch only turns off the monitor and not the MPU.

I just ordered a switching power supply kit from arcade shop - hopefully installing this will act as a giant UNDO from whoever tried to replace the last one.

-BB

Uh... the switching power supply has absolutely nothing to do with the marquee light. He probably just miswired the power input to the switcher, and attached it before the power switch, not after (why it won't shut off with the power switch). The marquee light also runs on 120vAC, probably got disconnected, or perhaps there is something else wrong with the light fixture. No sense throwing good money away buying a new power supply if the one that's in there is powering the game board fine.

-Ian
 
One other concern - does the monitor have an isolation transformer either built-in or added since the original power supply was replaced?

Bill
 
The pain in the ass problem here is that game isn't at my house, so I can't even check these things. I bought a tested and working marquee assembly for it and the light was still dead (new bulb and starter). Also, the game occasionally resets during play which I'm also assuming is the power supply hack job.

-BB
 
Also, the PS connections (in order) currently are:

+12V2A to 3 prong CPU molex connector
-5V1A (no wire)
GND (no wire)
GND to 3 prong CPU molex connector
+5V12A to 3 prong CPU molex connector
FG directly tied to green/yellow wire on transformer panel
AC directly tied to short brown wire on transformer panel
AC directly tied to short blue/brown wire on transformer panel

-BB
 
Galaga is a known "flakey" game - with bad IC sockets, etc. Check the voltage at the board, ensure that it's getting a good solid 5v.

As for the AC wiring - someone probably just cut and spliced in the wrong place. Check the harness plug the marquee light plugs into for 120vAC, it's probably just not getting power. The manual has a full wiring diagram, so you can put the AC side of the wiring back the way it's supposed to be.

-Ian
 
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