29 Nov
2007
29 Nov
'07
8:02 p.m.
Simon Fryer wrote:
Firstly, no smoke after power on, you have to be happy
about that, and
at least some life!
Yes, I am quite pleased about this as well! Especially since I
completely disassembled both power supplies for cleanup. In fact, a
couple of the PS PCBs went through the dishwasher to clean up the
remains to 'rodent residue'. On the whole, it seems that I got them
back together properly! ;)
If you have a reasonably accurate voltmeter of sorts,
what are the
actual voltages the power supply is producing? So far it is not clear
if the fault is with the voltage generation or detection circuits in
the power supplies.
Valid points. What I see at the 2.5V output terminals on the PS itself
is a moving target. There's a cycle of sorts. First I see about 1.5V
that climbs up through 1.6, 1.7, on up to about 2.0V over a period of
seconds. The the voltage looks like it drops to 0V momentarily, then
back to 1.5V and the cycle repeats.
BTW, I'm using a little digital meter, so it's hard to tell what's
happening when with all the digits changing. On second thought, I do
have an old analog VOM I'll dig out and see if that confirms what I
think I'm seeing on the digital. I didn't determined if this is
synchronous with the LED pattern I see, but it probably is...I'll look
tonight.
- Jared