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It sound to me that the factory PS did not have a fuse between them and the board. Also the newer smps have internal protection to protect themselves so the use of a fuse and/or crowbar circuit is unnecessary or just just not worth the effort given the risk.

Never seen a peter chou before. A search online says they are repairable, so I'm guessing though hole construction and can be run under no load? Can anyone confirm this. Also were can one buy one?

I'm going to have to buy an arcade power supply and particular brand I should look at? As I'm not going to skimp on the supply (in fear of blowing up a board). I can't find one that says overvoltage protected or am I overthinking this.

That looks awesome. I did not see any fuses between the power supply and game pcb are they really need or necessary?

I forgot that adjusting to +5 volts is definitely needed, so arcade supply it is. Does anyone know if the outputs on the supply are isolated?

The boards I want to use with this are from the early to mid 80's. I want to keep it compatible/usable with the galaxian series, and I am think about getting a sega system 16 board later on. I know they have different pinouts so I can't avoid an adaptor some were. Also I do want to make this...

Pin out type I going to make it to the Jamma stranded and make an adapter for the board I have. Next I'm going to pick out a power supply. I guess I can use a computer power supply because I don't need -5 volts.

As the title says I'm going to build a test rig to work on some of extra galaga board I have around. ( I really am going to do it this time, That what I tell myself ) Any way what should I be looking for or avoiding. This is still in the planning stage so any info. would be useful.

Try two put 2 credits on the machine and start a 2 player game. 2up should then appear on the screen.

No pulled traces. Just I broke the pins of the a few sockets that I had stuck some of the custom ICs is. i.e. the one that had broken pins to begin with..

Alright, I had some time over the last couple of day. That I would have spent playing the game so, I put on some Gundam Wing OST for background music and set to off. I got a lot of interesting screens and sound from the game. Most of the time it sounded like an alarm going telling me I'm...

Thank everyone, Hope everyone had a great 4th. Thank to my indecisiveness I have to wait to get a renewal kit. Also channelmanic have a great vacation. I personally wouldn't post that online thought. I just don't trust some people out there, were ever there is.

Check the dip switches one is "automatic rank advancement". I would check that first. I also have a Galaga but its not currently working. Hope this helps.

I know just wanted to eliminate everything else before I do all that work and possibly cause more problems that the board don't need. It has too many as it is.

I messed with the board yesterday and this morning. checked the ribbon cable between th boards. I got it to boot once and it started a 2 player game by itself and flow the ship left and right as well as fire. The controls had no effect the game end with a score of 0 and 100 points. wired as...

I appreciate all the feedback. I confident that I can do the work to the board. I've been soldering my own projects scenes high school. I just really really like to know where the problem is before I chase after it with an iron. I figure that changing all the socket would take me about 4...

Were and still are... Stupid single whip sockets. My board looks to be all original with those sockets and non encapsulated resistor packs even the ram and z80s have a date code from 82. So im a little hesitant to solder on it again. As an update I did the same thing to the video board and now...

I have not changed any sockets yet. I did check all the resistor packs with an ohm meter. All looked well. I did have to reattach some pins on those custom chips, I put those in sockets and those sockets in the original one on the board. Thanks for the info too.

I had a galaga that had a sound issue. All the sounds were fine but the fighter captured sound was just all wrong. So I removed all the socketed chips on the cpu board and cleaned the pins and sockets put it back together and it worked. For about 2 week then stared to intermittently not boot...

Don't part it out...will someone save this, I would but I,m 1,000 miles away.