[R-390] Halloween Set
Bob Camp
ham at cq.nu
Sat Aug 7 18:33:31 EDT 2004
Hi
Main power to the radio is controlled by a microswitch ganged to the
function switch shaft. It is fairly common for this little item to weld
it's self in the on position. Last time I had a problem with one of
these I got the parts from somebody on the list. It was either David
Medley or Hank. The fix is not to hard except you have to unmount the
front panel to get at the switch. It's a little time consuming is all.
When you mount the new one you want to make sure it's snug on the mount
so it goes full on / full off. If it gets loose it may weld again.
The flashing is a bit odd. Other than the heater thermostat in the
crystal oven I can't think of anything in the pilot light circuit that
would cycle. You may have a bad wire from the power transformer to the
filaments. It's P111 / J111 in the Y2K manual. You might also make sure
the "ovens" switch on the back of the radio is set to off.
Everything about these radios is fixable. I do not know of any parts
that are in the "can't get or replace them" category. Dive on in and
see what's wrong. They were designed to be repaired.
Enjoy!
Bob Camp
KB8TQ
On Aug 7, 2004, at 5:42 PM, Commtekman at aol.com wrote:
> Hey Guys-
> In one of my 'senior moments', I bought an R-390 off of Eplace, finally
> received it, powered it up without turning it on, all the tube
> filaments came on
> while it was still in the 'off' position, and the dial light started
> flashing
> like a haunted house on halloween night. I suspect without going
> further that
> this has something to do with the standby or break-in being held up
> and not
> releasing. Ideas?
> Tnx Bob
> K6OSM
> Mccall, Idaho
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