[Boatanchors] repair wirewound resistor in Super Pro power supply

[Gary Schafer]

I have repaired resistors like that with a single strap tap. It will usually
have a wide enough area to make contact with both sides. A small piece of
metal (brass) inserted under the clamp should work.

You can solder nicrome with acid flux. Be sure to thou rely rinse.

73
Gary  K4FMX

> -----Original Message-----
> From: boatanchors-bounces at mailman.qth.net [mailto:boatanchors-
> bounces at mailman.qth.net] On Behalf Of Doug Forbes
> Sent: Thursday, May 11, 2006 12:33 PM
> To: Boatanchors at mailman.qth.net
> Subject: Re: [Boatanchors] repair wirewound resistor in Super Pro power
> supply
> 
> 
> You are not going to be able to solder the nichrome wire that makes up
> that
> resistor. You need to devise some sort of mechanical connection to tie the
> ends together. One method I have used is to get two of the metal bands
> used
> for tapping the resistor and installing one at each location of the broken
> ends. Then wire the two taps together. You can also try unwinding a turn
> from each broken end, chipping away the ceramic very carefully and then
> just
> twisting the wires together. Sometimes you don't have to chip, the wire
> unwinds from underneath.
> 
> Hope this helps.
> 
> Doug Forbes
> WA6VYN
> 
> 
> 
> > I recently picked up a couple of Super pros at Hoss Traders in Ct., a
> > SP-400-X and a BC-779-B which has a much bigger power supply than any
> other
> > Super Pro I have and one of the wirewound resistors has a break in the
> > middle. I have both ends of the wire at the break and wonder if this can
> be
> > soldiered or should I
> > just put a power resistor in it's place?
> >
> > Bob Young
> > Millbury, Ma
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> 
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