N64 PSU alternative that fits original case / or help fixing existing one...

A few days ago I received a broken N64 PSU. Already opened it up and checked a few things. The cord works fine and makes good contact with the board. The 3 fuses in it are fine too. None of the tube shaped caps bulge. I tested all of them -had to desolder a few because they gave me crazy readings when connected- and they all check out. I did find two blue 4700pF disc caps (KH472M) that only gave me a 4150pF and 3950pF reading though. So those might be a problem I guess. Still, I have far less technical knowledge than most members here, and there's also a few things I haven't been able to check because I either don't know what they are and / or how to read them. Like Those two big coil thingies, and all the smaller components I simply can't read / reach. Or those round magnet-like tubes. Or those tripods. So I have a few questions...

- Is there a cheap alternative board with the right specs I can buy or make and put in the N64's PSU case?...

- Are there any N64 PSU schematics online? I can't seem to find any. And even if I would, there's also the problem of different PSU models, even for one region.

- Are those blue 4700uF disc caps I mentioned a known problem? If yes, I would take the risk and spend some money on a pair of them.

- Got any other tips for me?...

Thanks for looking into it guys... ^^

 

Replace the fuses and capacitors?
http://nobitleftbehind.wordpress.com/2013/10/09/nintendo-64-repair/

 

Nope. Fuses work just fine. Electrolytic caps too. Found out the square block right behind the cable connector is also a cap called a film cap, and it works just fine too at 0.1µF. There's still a few things I haven't tested, like eg the fuses. They are really hard to reach, and schematics would help a lot to determine their values and the values of the stuff I don't know...

Only things that seems to have a lower value than they should are those two 4700pF disc caps. Then again, I haven't checked everything yet. So that might not be the problem...

One's 4080pF, the other 3910pF. So no idea if that's far enough off to cause any trouble.

 

disc cap rarely fail, are you sure you measured it correctly? That is disconnect one pin or pull it out and tested it? Also what are the listed tolerance? 3910 is less than 20% if that is the tolerance.

 

I desoldered them completely, then measured them.

They don't seem to mention the tolerance on the caps themselves, but I googled them and they should indeed have a 20% tolerance.

 

So you checked the caps using what? Did you use a capacitor meter? if not I would likely just change them out to be safe since they aren't too much money and change those disc caps while you're at it.

 

I used a Honeytek A6013L capacitance meter.

http://www.amazon.com/Honeytek-A6013L-Capacitor-Tester/dp/B0036FQ3FW

It's no Fluke, but it does the job.

I don't recommend buying one though. The orange flexible bumper has the most horrible gag reflex inducing 'made in China' smell. If I'd have know, I would've bought one of those PCB style capacitance meters. Or saved up for a second-hand Fluke... lol

 

I have that same one but it does the job. Couldn't you get a 12v PSU as I believe thats what the n64 takes it BUT I could be mistaken on that.

 

That's why I asked if there's maybe a small board I could buy that replaces the innards of the original PSU.

Small enough to fit the original casing that is.

That's really kind of you. But I'm sure shipping to Belgium would ruin the deal... lol

Still, much appreciated... ^^