[R-390] Some progress

[Jim Brannigan]

I agree,  and I tighten all screws on the chassis, particularly the tube
socket screws.  This causes the washers to bite into the aluminum.

There is no aluminum wiring in my house.  Many a homeowner has gone through
an expensive rewiring to correct the problems with aluminum.

The Canadians like aluminum wiring.  I have a friend in Toronto who claims
zero problems with aluminum.  I don't know what they are doing up there, but
it seems to work for them.

Jim


> I think it is a good idea also to address all the ground
> connections while you are servicing each module.  The
> chassis, being make of aluminum, oxidizes and makes
> poor connections.  I loosen up the ground and clean
> the connection point then use Ox-guard- or other  aluminum
> electrical connection compound.
>  Use of a compound for aluminum electrical wiring is a must, and aluminum
> house wiring has a very high failure
> rate because of the oxidation of the wiring.
>
> Scott
>
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> ----- Original Message -----
> From: "Jim Brannigan" <jbrannig@optonline.net>
> To: "R-390 list" <r-390@mailman.qth.net>
> Sent: Friday, January 03, 2003 5:24 PM
> Subject: [R-390] Some progress
>
>
> > So far....
> >
> > I cleaned the front panel and knobs...
> > Did a partial re-cap of the IF and audio decks...
> > De-oxit all tube sockets, switches and connectors.
> > tracked and graphed the PTO.  It is off 6.5 KC end-to-end, but pretty
> linear
> > at the 100kc points.
> > (I'll set the end points later)
> > Pulled the front panel.
> >   I had a can of Radio Shack degreaser( the one with the tube and brush
at
> > the end).  It made short work of the gunk on the gears.  The bad news is
> > that RS no longer stocks the stuff and in three store visits I could
only
> > find one more can.
> >
> > Pulled the RF deck....
> >
> > More to come
> >
> > Jim
> >
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