[Elecraft] KX1 RX deaf after KB3080 installation

[Ron D'Eau Claire]

Looks like it's Q7. I pulled T2-2 and still had the short. So I pulled Q7.
The 
short went away at L6 and the RX works. Q7 is shorted- only 3 ohms collector

to emitter. I don't think it's not a random failure. The original problem 
with the KXB3080 was a hot Q6 but very low output power. That problem was 
caused by a solder bridge between B and A on the KXB3080 so I'll bet too
much 
TX RF got into Q7 and fried it. If I'd caught the problem during RX testing
I 
would have avoided this.

At least I can play with the receiver while I wait for a new Q7. The 
sensitivity does seem improved, at least on 20 m, by the KXB3080.

Thanks Ron, Don, and Alexandra, for all the help!

73, 
Bruce
N7CEE

----------------------------------------

AHA! Good for you, Bruce!! 

It's a great feeling to know what went wrong! 

I observed to another friend recently that building something and seeing it
work is one level of achievement. Finding something that doesn't work and
fixing it is quite another! 

Congratulations! 

It is common to note some improvement in sensitivity on all bands after
doing the KXB3080 installation.

Ron AC7AC