power supply's confusing

daguuy · Post by **daguuy** » Thu Sep 01, 2005 5:37 pm

i just got some N64s and a power supply from gannon but my little brothers are always using the power supply so i'm gonna use a computer power supply for now and i found out the pinouts but there's 2 wires i don't how to use. there's "power supply on" which i probably know what it does but not how to use it and there's "power good" which i have no idea what it's for or if i need it. how do you turn a power supply on without a computer? here's the pinout:

Post by **gannon** » Thu Sep 01, 2005 6:15 pm

ignore power good. wire a momentary NO switch between power on and ground.

daguuy · Post by **daguuy** » Sat Sep 03, 2005 9:05 pm

i tried that and it fried the psu

. then i found something easier to turn on: an old PSU with a real switch instead of those fake hard to use switches but it only ouputs 5v and 12v. i know there's a resistor that can lower that to around 3.3v. what are the color bands for it? i thinks it's 2-3 ohms but i'm not sure. i also have some 100k pots. is there a way i could use them to get it down to 3.3v? also, how do caluculate how much resistence you need to get a certain voltage?

usbcd36 · Post by **usbcd36** » Sun Sep 04, 2005 8:39 am

First of all, those dinky 1/2 watt resistors from RadioShack aren't going to do crap, they'll blow as soon as you run that much power through them. No, you're going to need a larger resistor, which isn't practical either. I'd just get a new mini-ATX supply and use that, you'll need an AC adapter for it though, I think it's about 12v or something. As for the power, just try wiring up the N64 (3.3v to 3.3v, 12v to 12v, ground to ground), if it doesn't work, well then it doesn't work. Search for more answers.

metal_mattt · Post by **metal_mattt** » Sun Sep 04, 2005 12:17 pm

wiring a switch between ground and power-on, always works for me!

daguuy · Post by **daguuy** » Sun Sep 04, 2005 2:45 pm

i did that and it turned on, but it made a quiet high pitch noise and then died, i don't know why

MikeJones · Post by **MikeJones** » Sun Sep 04, 2005 5:17 pm

Why not just go to EB games and get a N64 supply for 3 bucks? they're really common in the stores i go to.

daguuy · Post by **daguuy** » Sun Sep 04, 2005 5:39 pm

that's 3 more bucks than i want to spend, especially if i have what i need to get 3.3v somehow

usbcd36 · Post by **usbcd36** » Mon Sep 05, 2005 7:28 pm

Another advantage to getting a mini-ATX supply would be the easy use of it in a portable, see, most of them take like 12v DC. I'll bet they won't fry so easily, maybe something was wrong with yoursâ€¦