[1000mp] Strange behavior with my VRF/MEM CH Control

[Steve Fraasch]

Bob:

You'll need to get inside to the front panel.  THe VRF/Mem Channel knob is a rotary encoder.  It is the ENC-A-Unit shown on the bottom right of the schematic sheet that shows the overall block diagram.

Check solder connections, check the +5V supply to the board and encoder, and then with a scope, note the activity on the mem 1 and mem 2 lines.  It may be that the encoder itself is bad, not the switch.

Good luck,

Steve, K0SF

-----Original Message-----
>From: Bob Martin <bob.martin at charter.net>
>Sent: Sep 20, 2006 6:04 AM
>To: 1000mp at mailman.qth.net
>Subject: [1000mp] Strange behavior with my VRF/MEM CH Control
>
>I have noticed some strange things going on with the VRF/MEM CH control on
>my Mark V.   When I use it for any of its functions it is very erratic or
>unpredictable.
>
>When I turn the control left or right it sometimes will jump all over the
>place and is
>
>almost unusable at times.  Most of the jumping around occurs when I am
>moving the control to the left.  As anyone else had this problem.  I just
>love my Mark V.  It keeps me on my toes. 
>
> 
>
> 
>
> 
>
> 
>
>
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