[Elecraft] Burn in of KPA100

[Don Wilhelm]

Rob,

And ... you will *not* notice any problem at all until one time it just 
stops transmitting and you have zapped the PA transistors because their 
cases got hot and the heat could not transfer to the heat sink.

THEN ... after putting new transistors and thermal pads in place, you 
must start the clock again and re-tighten after some time on the new 
transistors.

What I am attempting to communicate is to DO IT NOW!

73,
Don W3FPR

Robert Allbright wrote:
> Hi Tom, NG3V
>
> I built my KPA 100 in Jan/Feb 2007
>
> I still haven't reset the
> mounting screws and haven't had any problems sofar, my K2/100
> just works fine business mainly from the car /m at full power.
> Sometime soon I'm intending to check out the filter alignment
> etc so will check those screws in the KPA 100 then.
>
> 73 Rob G3RCE K2 #5219
> --------------------
>
> On 22 May 2008, at 04:08, elecraft-request at mailman.qth.net wrote:
>
>> [Elecraft] Burn in of KPA100
>
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