[Elecraft] KPA500 Heat Expansion Pop

[Joe Word]

Gary,

That sounds like what I am hearing, thought it was a relay controlling
the fan, but as you said, it did not pop when the fan came on/off.

Joe  N9VX

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Mine pops or clicks too.

In my case, it sounds like a relay switching.  I thought at first it was
something sensing the temperature and changing the fan speed, but the pop
doesn't (often) coincide with a change in fan speed, so I think that's a red
herring.

Another ZL told me his KPA does the same thing.

Our amps still work just fine though!

73
Gary  ZL2iFB



On Thu, Dec 8, 2011 at 12:37 PM, Joe Word <joe.n9vx at gmail.com> wrote:
> My KPA500 has developed a heat expansion pop. When it heats up and
> then cools down I get a pop from inside the amp. It does this now
> every time I make a SSB transmission.
>
> Anyone else experience this? If so, any resolution?
>
> Joe  N9VX