|
 Antec
SU-430 (with 80mm fan)
[06/12/24] This just stopped
working. It's possible one of
the 12V rails was overloaded due
to it having two at only 16A
each and it was powering a
graphics card.
| Power supplies deal with high voltages and
should not be meddled with, even when unplugged the
components can still hold a dangerous charge. I've witnessed
a bulk-capacitor experience a rapid discharge when it
got shorted out on a stray item on my workbench - they pack
a punch that could be fatal. I typically leave a PSU
unplugged for a few days before venturing inside. |
There was some dust build-up
inside...
After cleaning that out and
carefully looking over the
components the only issue I
could see was what appears to be
a blown resistor...
Behind this plastic shroud...
Without another one of these
PSUs or schematics to reference
I see no way to determine the
value required (there isn't a
similar one nearby). These are
the options ChatGPT suggested,
along with the following:
To identify the value of the
resistor at position R100 in
your Antec SU-430 power supply,
we can approach the problem as
follows:
Steps to Determine the Value:
Check the Circuit Context: The
position of R100 in the circuit
is critical. In many power
supplies:
If R100 is near the input stage
or connected to high-voltage
capacitors, it may be part of a
startup or inrush current
limiting circuit. [Yes]
If it is near the transformer or
output stage, it could be part
of a snubber network or feedback
circuit. [No]
While it appears to be
associated with the early stage
this still gets me no closer to
knowing its value and perhaps
even replacing it might reveal
something else is the cause of
its failure.
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