[R-390] Silver solder

Mon, 24 Jun 2002 10:05:28 -0400

I have seen several recommendations for silver solder on joints in the
"signal path" in the RF deck.  I have not applied it, and my signal is fine,
but it could improve if I take the time to do it.

On grounding points...

Many faults disguise themselves as component failure when they are in
reality a component that has lost it's ground.  Reestablishing the ground
will cure the majority of suspicious components, in my experience.

Also, take the time to re solder joints that look suspicious.  Grounding
points and deterioriated solder joints are the cause of almost all faults in
this radio, in my experience.

Jim

----- Original Message -----
From: "scott" <[email protected]>
To: <[email protected]>
Sent: Monday, June 24, 2002 6:30 AM
Subject: [R-390] Silver solder

> Is silver solder recomennded for any of the joints?
>
> I have just re-capped the AF module.  There are so many mechanical grounds
> in this set!!  What makes it worse is the fact that the chassis is
aluminum.
> Aluminum oxidizes and makes for poor connections.  Aluminum wiring in a
> building is an electricians dream--lots of service work.  A special
compound
> is now required for aluminum connections.  Why should this radio be
> different??  Boy it just looks like a lot of intermittent and hard to
trace
> problems in the making.  I am loosening all pertinent
> connections....applying Deoxit....then re-tightening.  Would seem foolish
> not to while each module is on the workbench getting rebuilt.
>
>
> Scott
>
>
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