[SEDXC] Power Sipply Guru Needed

[Ed]

> However, when I first powered on the power supply, it came
> on with a "bang" sound but voltage output was a stable 13.82V so I
> fired up the rig. 
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That problem is a "classic" for power supplies which have not been
used for a long time. The electrolytic capacitors tend to break down
in places, which is where the "bang" came from.

Normally, if one applies 12 VAC to the 115 V input for a few minutes,
the caps will replenish themselves.

The interference is from improperly filtered DC.

Replace the capacitors.

One more warning to all. If you are operating a power supply, and all
of a sudden, you hear what sounds like a rattlesnake, do this.

1. If you can hit the off switch within 2 seconds do it and then apply
rule 2.

2. Run like hell, the caps are about to explode.

73
Ed