[Elecraft] K2 diminishing power on 15 to 10 meters

[Alan Jump]

Not having the schematics in front of me and not being familiar with the unit...PCB traces don't usually burn on their own. Did Q4 check as good? Might be worth some desoldering to put an ohmmeter on it.

73 de N5ILN

Sent from my iPhone

On Jul 21, 2012, at 7:40 PM, aj4tf <aj4tf at arrl.net> wrote:

> Interesting, I am working on a KPA100 problem right now.  The original
> problem was reduced output on 15m, but when I disassembled the KPA100, I
> found a burned trace on the circuit board in the bias current circuit
> feeding Q4.. which seems unlikely to have caused a problem only on 15m.  I
> plan to put it back together tomorrow and test it.
> 
> 
> 
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