[R-390] new member, R390A, no signal when first powered on, works after 10min but RF cutting in and out

[Robert Moses]

A chopstick or similar object to tap lightly on suspected problem areas
can be helpful in finding loose connections.

On 06/26/2014 01:14 PM, weekspat at imonmail.com wrote:
> Hi,
>
> I got a Motorola R390A, signal corps unit last year.  Have recapped,
> and fixed most problems, but I've got one nasty intermittent one.
>  Seems like the RF signal is not getting to the RF AMP and or
> conveter or thru it, so I think I've got no signal to the IF section.
>  Then after some time it starts making some popping sounds and
> shortly after that "pops" on with normal reception.  Happens on all
> bands.  I'm wondering if those mini BNCs are to blame.  Any hints ?
>  The problem sort of " comes and goes" so its hard to nail down
> thanks, Pat Weeks
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