12 Jun
2002
12 Jun
'02
9:31 a.m.
--- Tony Duell <ard(a)p850ug1.demon.co.uk> wrote:
Oh, what the heck, I've dug mine out and pulled
the PSU. Alas I don't
think it's quite the same unit. The PSU connectors sound similar, but the
mains smoothing caps in mine are 330uF 250V. There are also 2 fuses on
the PSU board itself -- F1 is a 1.25" (3AG?) fuse in series with the
mains input and F2 is a soldered-in fuse...
Nope. Not the same at all. I have three identical units, but no fuses.
Anyway, on my PCB there's a 120k resistor (looks
to be about 0.5W,
small)running parallel to the long edge of the PCB between the 2 mains
smoothing capacitors. At a quick glance that's the startup resistor.
I'll check for something that looks like that.
My PSU is made by 'Joule Power', apparently.
Mine, too, but I don't have the model number with me at work.
I looked into the third PSU - it has a fried diode near the output
connectors - cracked and blackened. There is also a small area of
discoloration under some 1/8 and 1/4 W resistors located toward
the input side of the board, between the large transformer/inductor
and the input taps.
The other two are clean.
I'll look into that 0.5W resistor. An easy fix if that's what it
is.
Thanks again,
-ethan
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