I need to replace the T/R relay on an FT480R.
(Intermittent Rx, curable by a quick blip on TX)

I don't have an exact replacement, so I'll use a
Varley 12V relay, with suitable mods to the driving cct,
and dangle the relay in the space behind the front panel.

Is there a knack to removing the main board without first
unsoldering the numerous connections? (i.e., can it just
be a tedious job, or must it be downright finicky?)

There is a second pair of change-over contacts on the
relay, but with both outputs wired together...this would seem
to suggest some form of muting effect that deals only with
the T/R or R/T changeover period. Any ideas?