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Hi all,
I posted a similar message on the Aeroelectric board. I am having intermittent
problems with my electric trim.  Sometimes when I need to slow and trim the 
aircraft
for landing the trim motor won't actuate.  I initially suspected the down
trim button, but once I had it not wanting to respond to an "UP" button press
as well. 
I have wriggled wires, plugs and un plugged terminations and driven the servo to
the end stops  but I haven't been able to duplicate the problem on the ground.
I am starting to suspect the servo and I am thinking it might be having trouble
reversing direction with air loads.
I'd be interested in anyone's ideas for trouble shooting. I have a 4 way trim 
switch
with a Ray Allen relay deck driving an older MAC servo unit.
One last question, can any one tell me the new part number for the servo unit.
Thanks,  Paul
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