K3 intermittent low power output

[Dave Johnson]

My K3/100 has developed an intermittent transmit fault. The power
drops to a very low, but not zero, level at any power setting using
either the LP or HP PA.

The symptoms/set up are as follows:

Mode CW
Using the KPA500 with it (not sure that is relevant)
ATU not in circuit
Power is low as displayed on the K3 and on the KPA500

In addition, and not related to the above fault (at least it doesn't
seem to coincide with the low power output), the CMP & ALC metering
display sometimes shows when the meter is set for SWR & Power.

Any thoughts?

Thanks

Dave, G4AON
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[John_N1JM]

How old is the K3? You don't have the KPA3 corroded pins problem, maybe?

73, John n1JM

[Dave Johnson]

Maybe John, it is serial 80 from November 2007. Does that problem also
reduce the overall output as it is low power when using the LP PA as
well.

73 Dave, G4AON

How old is the K3? You don't have the KPA3 corroded pins problem, maybe?

73, John n1JM
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