Dragon's Lair Fans - Arcade Lifestyle
General Chat => Technical Area => Topic started by: ckong on May 19, 2012, 11:24:05 PM
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This is how my Galaga looks inside
(http://i50.photobucket.com/albums/f307/ckong65/Galaga/P1000681.jpg)
It´s one of the three cabs that I got from Paul, the others being Pacman and Ms. Pacman.
I collected it today from my temporary storage (which will be terminated tomorrow ;D ) and I now hope that I will be able to work on it. When I got it from Paul, the game didn´t work, it gave no life sign at all. I now probablý know why, the backdoor ´power safety pin´ (?) was hanging loose and in the ´shutdown the cab´ mode :)
So it may be working after all, I will try it tomorrow. I already removed the game pcb some time ago and played it since then quite often in one of my candy´s and it is working 100%.
Anyway, I have a few questions:
Where is this little circuit for, mounted on the left panel:
(http://i50.photobucket.com/albums/f307/ckong65/Galaga/P1000682.jpg)
What is this circuit, and is it normal to have such heavy burn marks:
(http://i50.photobucket.com/albums/f307/ckong65/Galaga/P1000686.jpg)
On the transformer board there is one fuse missing, delibaretely done, because the wires are also cut. Where is this fuse for:
(http://i50.photobucket.com/albums/f307/ckong65/Galaga/P1000683.jpg)
There is a fuse on the monitor chassis mounted where I never have seen a fuse before. What is ist for:
(http://i50.photobucket.com/albums/f307/ckong65/Galaga/P1000685.jpg)
In general, is it always a must to have a 115V fuse for Galaga, or can I replace broken fuses with 240V ones, but of course with the right Amperage and Slow blow / Fast blow specs?
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Even in the US the fuses are always rated 250V. Fuses aren't about voltage but about current. After all, a fuse is nothing more than a very thin wire. Push too much current through it and the wire will burn through like it's supposed to.
That hacked in fuse on the monitor replaces one of those terrible pigtail fuses which were soldered directly on the PCB instead of putting a decent fuse holder in there....
This is the proper way to do this:
https://www.dragonslairfans.com/smfor/index.php?topic=3095.msg43898#msg43898
That PCB with heat marks looks like a power supply board. These kind of heat marks are not uncommon. It would be wise to remove it and inspect the solderings, or redo the anyway.
No idea what the small board is but I do think there is one in my Ms.Pac
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the small board is for rapid fire
Hold the fire button and you have automatic fire
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the small board is for rapid fire
Hold the fire button and you have automatic fire
OMG !!!!!! That makes the game even MORE easy (if possible) !!!!! Tsssshhhhh...
Remove it now ! ;D ;D ;D