hw-101 carrier null

[n7kbj]

Season's greetings to all you heath guru's!  Once again I need your
advice on an HW-101 problem.  My rig is showing almost full output
when the mike is keyed and and the mike/cw gain is fully off.  Attempts
to null the carrier produce only erratic changes and no nulls, unless I
pull or push a bit on the shaft of the null control.  I have read from the
list that the 6EA8 at V1 should maybe be replaced with a 6CQ8 to
prevent V1 from going into occiliations.  However, I have also read in
the service bulletins that there was apparently quite a problem with
failures of the carrier null control.  My question is this - which problem
do you think I have here (or both)?  and if it is the control, anybody have
a good replacement source for these little things - manual say it's a
200 ohm?  Thanks in advance!!
Jim - N7KBJ

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