[R-390] Intermittent Filter

[Joe Foley]

Dirty bandswitch, dirty trimmer cap, maybe a short to
ground on the center contact of the trimmer.

Just generally do a poke around in there to see what
you can find.

Joe



--- Mike Hardie <hardiem@intergate.ca> wrote:
> The 4 Kc filter in my '390A is "intermittent".  It
> works OK when the radio
> is first switched on.  After warming up even
> slightly, if the mode switch is
> moved to standby then to AGC, or if a different
> filter is selected then 4 Kc
> reselected, the audio is extremely weak. (Almost not
> there.)  If no
> selections are changed after the radio is first
> turned on, the 4 Kc filter
> works normally.
> 
> 
> The other filters work normally so far as I can
> tell.
> 
> Does anyone have an idea before I start the
> honest-to-goodness trouble
> shooting?
> 
> Mike VE7MMH
> 
> _______________________________________________
> R-390 mailing list
> R-390@mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/r-390


__________________________________________________
Do You Yahoo!?
Yahoo! Games - play chess, backgammon, pool and more
http://games.yahoo.com/