28 Apr
2011
28 Apr
'11
12:31 p.m.
I have just this minute attached a dummy load to one
of the 5V outputs and
powered it on. Using a multimeter I measured 5.4V on the 5V outputs and
There are 2 independant 5V outputs on this supply, the logic +5V and the
memory +5V. Which one did you load, and did you check both of them?
15.8V on the 15V outputs. I ran it with just the fans
running (forgot to
disconnect them) for about 5 minutes and then switched it off. Are those
The fans are not a worry. The fans themselves are simple AC motors and
will not be damaged by (sensible) overvoltage. The fan control
electroncis might be, but that's on the PSU control board, not in the
fnas themselves. so it can be repaired.
voltages within tolerance do you think? They seem
close enough to me to
warrant putting some boards back, but I would like a second opinion before
risking the boards.
The 5V is a little high, biut no hgih enough to do any real damage. I
have no ideawhat load you used, it may well be that with more load it
gets closer to 5V.
I think it;s safe to try the boards and see what happens. I would
re-check the PSU votlages with the boards fitted, though, in case one of
the drops when mroe heavily loadesd (this can cause some diffiuclt to
trace faults, well, dififuclt to trace if you don't check the PSU
voltages...)
I am not sure what you mean by barrier strips, you
mentioned them before but
I could not see what you are referring to.
It's a type of screw terminal block .The basic construction is a plastic
strup with little metal plates fixed to it. Each plate has 2 screws that
you can fix wires under. There ar plastic ridges, or barries; between the
plates so that odd ends of wires on one matal plate can't come into
contact with an adjacent plate, hance the name.
I think Farnell and RS sell them under that name, a look at either web
site will give you a picture.
-tony