[Elecraft] KPA500problem - Half output power

[TL_Netvision]

Hello Elecrafters

 

Thanks for your time on this, & I hope to find you all in good health 

 

My setup is K3+KPA500+KAT500.

 

 

Sometime ago due to probably high SWR  (water in the Pl259 leading to
KAT-500) the KPA-500 stopped after a loud noise (can't tell whether KPA or
KAT) was heard. 

When I reset it & checked all bands into a dummy load (no tuner), It
delivered half the regular output power on all bands. (25w in for appx. 150w
out). 

 

I don't know if this means 1 side of the PA is gone,  or is there  some 3db
pad connected permanently.

 

Any ideas for test procedures? 

Also how safe (forbidden?) is it to operate the amp in this "half-power"
condition?

 

 

Thanks in advance, 

 

Isaac, 4Z1TL

KPA SN 01090



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