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

[Raymond Cote]

From long and old guy experience I would bet on a resistor crack near a tube that eats it up a bit
YMmv

Sent from my outdated iPhone wireless thingyo

> On Jun 26, 2014, at 14:57, "Robert Moses" <rhmoses at earthlink.net> wrote:
> 
> 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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