Lithium Power Upgrade Q's - RC-Monster Forums

Mister_Anderson · 04:12 PM

Thanks.
I recently got a chance to see if my power supply worked. The fans didn't turn on like you said but nothing was hooked to ith though. It does have a switch on the back.
Thanks,
Chris
P.S. it says not to open the case because there are hazardous voltages contained within. Is it still ok to do what you did?

BrianG · 08.02.2006, 05:15 PM

The fan should turn on even with nothing attached. If not, one or more of the main voltage rails (3.3v, 5v, 12v) may need to be loaded with about 1/2A. It's hard to say which one(s) need to be loaded without simple trial and error. Or, the PS could simply be bad.

As far as hazardous voltages; technically, one should not dig around in there, especially when it is ON, since the PS rectifies and filters straight 120v AC, which turns out to be ~169v DC. So, leave the large capacitors alone ( although most circuits discharge them slowly when the PS is off).