From: "Allen (Marty) Martin" 
Subject: Re: [drakelist] FS-4


I can also attest to the effectiveness of the De-Oxit. I use the type with
the needle applicator for switches etc. The spray type works good for pots
and such.

Marty

----- Original Message ----- 
From: "Gene McCalmont" 
To: "DAN COTSIRILOS" ;

Sent: Thursday, March 11, 2004 7:17 AM
Subject: RE: [drakelist] FS-4


>
> Hello Dan;
> I have had problems with my FS-4 that were similar to the symptoms you
> describe and the repair was rather simple, which may (or may not) mirror
> your situation. The FS-4 uses wafer switches similar to those found in our
> other classic Drake rigs. Over the years, these wafer switches build up
> oxidation which interferes with the switch's operation. Before I would try
> any advanced diagnostic/repair techniques as offered by Herbert Schulz, I
> suggest you clean the wafer switches with DeXoit and see if this clears up
> your problem. Disassembling the FS-4 is rather easy and all of the
> components are readily accessible. Be sure to remove the top inner shield
to
> gain access to the wafer switches under the shield. I use DeXoit D-100 in
> the small dispenser bottle rather than the spray can, so that I can
> concentrate the cleaner on the switch contacts rather than spray down the
> whole assembly.
>
> If this does not solve your problem, I personally would appreciate you and
> Herbert posting your discovery and repair techniques to the reflector
rather
> than go private. We can all benefit from Herbert's considerable expertise
in
> this matter.
>
> Best regards;
> Gene
> W5DDW
> Gene McCalmont
> 270 Oakridge Road
> Argyle Texas 76226
>
>  -----Original Message-----
> Does anyone have any experience with fixing a FS-4? I have one that puts
out
> erratic freq.'s and the 0-5 does not change anything. Any ideas?  Dan
>
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