[Collins] Need Advice - KWM 2A Transmitter Problems

[pjdobosz@juno.com]

I recently purchased a WE KWM 2A (circa 1968) that appears to have
transmitter
problems on some bands.  It appears to be working somewhat on 75 and 40 
meters but the other bands won't load up at all.  It makes no difference
if I tune
it up into a Laboratory 50 Ohm dummy load or into an antenna, the
behavior is
the same.

Here are my observations:

75 & 40 Meters

Tunes up and loads OK with slightly lower plate current and RF output
than the
book values in the manual.  RX seems to be OK.

20 Meters

No grid current indication in tune position.  RX noise peaks but no plate
current
thus unable to dip plate or measure any RF output.

15 Meters

Grid current & exciter peak very touchy.  Was finally able to get tuned
similar to 
75 & 40 Meter behavior.

10 Meters

Same characteristics as 20 Meters unable to get it to load up

Prehaps those of  you with specific Collins experience, especially
"hollow state"
knowledge of this rig can give me some ideas of where and what to look at
to 
get this repaired.  I'd also appreciate any insight into who might
specialize in 
KWM 2A repair & alignment.  I'll be anxiously awaiting your replies .....

Paul - K8PD
Noblesville, IN