[R-390] Low Audio

[w9ya at arrl.net]

While the oil in WD-40 will clean about as well as any oil, when WD-40
dries out it leaves behind a waxy substance. i.e. One must *truly*
clean-up the residue of WD-40 to maintain good electrical contact.

Needless to say I do not use WD-40 for anything around here. If I need
wax, I use wax. If I need an oil I use one that does not leave behind what
WD-40 does. Being honest about things I have never been able to give away
my unused stock of this stuff. Hi...Hi...


Vy 73;

Bob
w9ya


> I am a new R-390A owner and am encountering a problem.
>
> Over the weekend, I pulled the front panel so that I could align a
> couple cams and clean the pots and switches on the front panel with
> Deoxit.  I also pulled the power supply and audio deck to do basic
> chassis cleaning with a paint brush and WD-40 on a cloth.  Upon
> reassembling the radio, I found it has very low audio, with some
> distortion when I crank up the local audio gain.  However, everything
> else seems to be working normally.  I have swapped the audio deck tubes
> with known good ones, just in case, but this made no difference.  It was
>  working before I started, but clearly needed to have the pots and
> switches cleaned.
>
> Is there anything obvious I might be overlooking?
>
> Thanks.
>
> 73,
>
> Fred
> KE6CD
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