Many thanks to Don and others who responded.
The problem has been fixed, I found a suspect dry joint on the PTT/ATT
switch.
I also checked the new encoder which appeared ok but I did insert a very
thin piece of insulation between the new encoder and the control board
to make sure.
All tests now appear ok UNTIL I re-insert and tighten the two holding
screws in the Control Board. When these are tightened, the control board
is pulled about 1/8th inch toward front panel, probably stressing both
boards, causing the display to be erratic (ELICRAFT instead of ELECRAFT
for example), and erratic other test results. Stressing the boards may
be causing movement in sockets where they are used.
Does it matter if I leave those two screws out?
Another option would be to put in longer screws and not tighten them so
much, or perhaps a better suggestion maybe to increase the spacer length
marginally, so that there is no stressing.
73,
Kev VK5KS
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