I posted a couple months ago with a problem I am having with my KPA100.
Life has gotten in the way, and I didn't get fully through the
solution. Someone, I think an N9?, was helping me, but I had a HD crash
and lost those emails.
The short story is a screwdriver was dropped into the open K2/100 during
final testing stages, just before I got to the bias adjustment. Things
sparked real pretty like, and the K2 no longer recognized the KPA100.
I replaced U2, U4, and U5 (I think that's right.) I also replaced Q6,
Q7, Q10, Q11, Q12 and R8.
The K2 now sees the KPA100 well enough to give me error code E12 and
Firmware version 1.10. I can't get the K2 to see that the high power
12V supply is plugged into the KPA100. I always get a NO PA PS
message, hence the E12 error.
I get 13.8V into R8, and 0.8V out of it. Then I get 13.8V into Q12, and
0.8V out. Thus, Pin 7 of U1 only has 0.8V. The manual says it needs
4V, and I can't find a 4V reading on anything, anywhere.
The K2 turns on just fine with *just* the high power 12V supply plugged in.
Any ideas, anyone? I really want to get this thing going!
Thanks,
-Chris KL9A
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