Mark,
OK on that. Since you have the new encoder board, it could be touching
the pins on the back of the Control Board which can cause all kinds of
"strange happenings".
First step is to flush cut (diagonal cutters will not do the job) the
pins on the encoder board (cut right down into the solder). Then flush
cut the leads on the back of the Control Board where it can contact the
encoder board.
As an added protection measure, put a piece of card stock (business card
of part of a QSL card) between the encoder board and the Control Board -
or better yet a flat piece of plastic, like that used in many shrink
wrapped packages from the store.
Then see if the behavior settles down.
If it does not, you will have to find the problem in the Front Panel
switch matrix (not an easy task).
73,
Don W3FPR
On 6/10/2018 6:44 PM, Mark Petrovic wrote:
Don, the soldering on RP1 is very clean, top (viewed from the side of
the board with a light and magnifying glass) and bottom. RP1 is
aligned correctly, and I've verified that it is the correct part for
this location.
Worth mentioning is that the rubber spacer that installs onto the
bottom-side of the board in the corner nearest pin 10 of RP1 is
attached with a small drop of super glue (the original adhesive on the
rubber pad failed, as the pad fell off during casual handling of the
board). My understanding is that this cyanoacrylate super glue is
non-conductive, nor does the spacer w/glue bridge any solder pads.
I've not inspected the front panel board from the top, as this would
require unsoldering the 4 leads holding the encoder board to the front
panel board.
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