Basic Wiring Question

If I have a power supply with three +5v lines out, but the pcb needs four lines, do I just splice one of the lines? I am assuming that this is the case, but figured before I mess around with anything I should bounce it off here first. Sorry for the lame question.

Replace the wiring. Dont just split it. It has 4 +5v connections to keep the edge from burning.

Do you mean to open up the power supply and mess with the internal wiring? It is a brand new power supply (http://www.arcadeparts.com/powersupplies/80001500.htm) and I am trying to build my own cabinet from scratch and learn as I go. I suppose I was hoping that this arcade power supply would actually have all the outputs I would need.

Run multiple from the PSU and then hook up to each of the power input pins to spread the load out.

Got it, so I am going to split one of the three +5v lines coming out of the PSU that way the PCB gets all 4 +5v inputs, right?

What are you running this to and for what purpose?

If it's in a harness, you could run 2 wires straight to each of their own pins and then take the 3rd and split that one to get the remaining two.

I'd personally recommend exchanging that monstrosity of a thing for a standard type supply. Not only would it offer much more connectivity options, it would be silent (and more reliable) since they don't use fans.

Here is an example of what is considered a "standard" arcade power supply.



Obviously multiple wires can be inserted into a single fork connector, allowing you to run as many or as few wires as necessary.

Yes, this is getting run into a harness that connects to a 4-slot PCB, so I will one of the +5v lines coming out of the PSU then the harness will have all 4 +5v lines to go to the PCB. I actually was about to get one of those "standard" arcade power supplies and posted about it about a year ago (http://www.neo-geo.com/forums/showthread.php?t=193840) and was recommended this one.

The only case such a unit would be suitable is if you had an original MVS cabinet and wanted to replace the original supply with one that looks similar.

Putting one of those huge heaps of shit into a brand new cab is beyond ridiculous. They don't even have an adjustable 5v, do they?

I would say that 3 wires would be more than enough for a 4 slot.... But yeah, If you have 3 thick wires coming out, Just splice one into two. If you are using an edge connector with the solder eyelets, just take a pair of pliers and bend the leads together. Then solder them together.

But any way you slice it... That PSU is overkill... Just get a peter chou type.

That PSU might be a good PSU for bench work tho.

It does actually have an adjustable 5v on it, wish I would have known it was overkill sooner, could have saved a few bucks. Finally got the setup powering on (right now just using an RGB-composite converter to the tv), just trying to figure out why my picture seems to be blurry. Most of the stationary text seems to be coming out fine but the character sprites and scrolling text (testing on Samurai Showdown) come out pretty blurry, hopefully its not just because of the cheap video converter. Since the MVS outputs combined video sync and the converter board I am using has a compliment of six inputs, I should just be able to input the combined sync on the fifth input and leave the sixth one unused, right? Man I suck at this...

Never mind, dirty cartridge, video output is good enough until I can afford a more expensive converter.