[Elecraft] No RF Power K2/100

[BYRON ALLEN]

After a few months of the RF POWER levels falling lower and lower, I
now have no RF OUT on 10 thru 17 meters and 20 meters only has 5 watts
out. Yes this is with the KPA100 attached. The remaining bands 30
meter thru 80 Meters have about 25-30 watts RF out and 160 has about
12-15 watts out.  I have changed the pre-driver ,drivers and the
finals in the base K2 -NO-Change ,then I changed the bias transistor
to the Finals -NO CHANGE.. Anyone have any ideas of what is happening
to now have lost RF out on 10 thru 17 meters?????? Serial #4670

Byron / N4AX