[ARC5] Command Receiver Repairs

[WA5CAB at cs.com]

Andy,

The socket contacts on the rear connector are simple blind holes.  The 
springy part of the connection is on the male contacts.  So you can remove most 
of the solder with desoldering equipment.  Then finish up with a proper 
diameter drill bit, preferably in a drill press.

I don't think that there is any practical way to actually salvage an old 
pin.  But the male mini-banana pins are I think still available from Pomona.  
Or were a few years ago.  Both hollow rivet and threaded stud types.  
However, the length of the largest diameter solid part varies, and you need to use 
one that matches the originals.  After removing the ground wire from the 
old terminal, you can drill through the inner edge of the riveted over part, 
then heat the wiring side of the pin and pull the external part through the 
hole and terminal.  

It is also possible to remove the old connector and replace it with one 
salvaged from another set.  The results don't look too good on the inside but 
it is doable.

In a message dated 11/12/2011 10:03:27 AM Central Standard Time, 
andy-young at supanet.com writes: 
> I have a 6 - 9.1 Mc/s ARA Rx which at first sight looks pristine, so 
> obviously a bodger selected a good one to mess up!
> He must have wanted to run it on an external PSU instead of a dynamotor, 
> and didn't have a rack or connector.
> So the heaters have been rewired, which shouldn't be an issue to repair, 
> but both coonectors are bodged. The rear connector has three sockets filled 
> with solder and the remains of wires, and the ground pin of the dynamotor 
> connector is broken off for some reason.
> These two connectors don't look they are designed to be removed intact, so 
> robbing connectors off a derelict Rx isn't the obvious way forward to me.
> Has anybody got experience of repairing the connectors?
> Before I apply heat to the rear connector, are the sockets just simple 
> 'plain holes' so a solder-sucker / solder removal braid should do the trick, 
> or are they sprung internally.
> Maybe the answer to the broken dynamotor connector pin is an external 
> grounding wire added to a dynamotor in a reversible fashion?
> Ideas welcome, please.
> Many thanks,
> Andy 
> 

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480