[Elecraft] K3 low Power

[Martin]

Elecrafters,
a little while ago i had an issue with loss of rf-power.
I thought i had found the problem. I hadn't.

Symptom now:
Power out only about 3 Watts.

I removed the 100W-PA, changed the Menue to 'not inst'.

With TUN PWR set to 12W i can achieve about 2.5W .

Only 1 of the 3 Transistors on the low-Power PA gets warm during (short) 
transmissions with the bottom cover removed.

There are 2 RD15HVF1 and 1 RD06HHF1. How can i check if a transistor is 
defective?

Any help welcome.


I think the 100W PA is ok. Well , i hope .

-- 

Ohne CW ist es nur CB..

73, Martin DM4iM