9 Mar
2006
9 Mar
'06
12:07 a.m.
If something "blew", there must be a major 'problem' somewhere
else! Did you find out why the board "blew"?
Tip on power supplies (in the 11/34): check the rectifier bridge.
Often (for what's "often" worth) a diode inside is open circuit,
thus the full-wave sine is used just for one half.
I agree with Tony. You must do several simple voltage measurements
at the power supply, distribution panel, connectors, sockets, etc.
Basically everything a connection "meets" from the PSU to the
backplane. Don't forget the wire itself!
- Henk.
What do you mean 'the board blew'? Did the
magic smoke come
out (if so, out of what?). Was there a hole burnt through the
board, melted traces?
FWIW, unless the board was actually burnt, I think it would
be repairable. I once did something very silly to a H754
brick with the result that 4 transsitors blew apart, one
ressitor totally burnt up, etc.
And that brick is working again now.
And the +15V board is actually very simple. It's a linear regulator...
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Thank you for your cooperation.
deal with and it came back to life - sans the
H745 coming up.
I will ask you once more. Have you done any actual electrical
tests on this PSU?
-tony