[R-390] Fixing a R-390A module connector

[dog]

I fixed one of those pins, but all I did was dig out some of the 
connector so I could get more solder around the bottom of the pin. So 
far it's holding. I did get a new/used connector, but it looks like a 
lot of work to replace it. Plus I don't have a drill press or lathe. I 
just used a piece of #18 solid wire as I remember. Mine is easy to tell 
if it's working or not, it was the BFO on/off pin.

There is a spare pin that can be used, but it would make it non compatible.

Great work BTW.

On 10/18/2019 17:43, Larry H wrote:
> Dave, Great work on the connector pin.
>
> BTW, pictures are allowed, just attach them to the post (note).
>
> Regards, Larry
>
> On Fri, Oct 18, 2019 at 12:10 PM David Olean <k1whs at metrocast.net> wrote:
>
>> I just got started on restoring a 1967 EAC R-390A receiver. It looks
>> pretty clean, with just a bit of schmutz on the chassis. I looked it
>> over and saw that two slug racks did not move. That was easy. I found a
>> gear that was not tightened with its' clamp. A more troubling problem
>> was the big multi pin receptacle on the IF module. One of the exposed
>> pins had been bent over and flattened against the chassis! I tied to
>> unbend it, but it fell apart as soon as I touched it.  I changed out the
>> problem caps in the IF assy with new modern capacitors, but was worried
>> that I now had a bad connector to deal with.  Here is what I did.
>>
>> I filed down what was left of the broken pin to get a flat surface.
>> Next I gently tried to prick punch the flat brass so I could start a
>> small drill bit. I ended up using a #66 drill bit in a pin vise and
>> slowly got a hole started in the flattened area. When I had enough depth
>> to start a real drill, I bolted the IF assy down on my drill press and
>> drilled a small 0.030" hole in the brass. (Maybe 0.100" deep) Next, I
>> opened it up with a #60 drill bit to 0.040" which is the diameter of the
>> pins required.  I turned down a new 0.040" pin out of HH brass on the
>> lathe and adjusted the length so that it fit in the new hole properly
>> and extended as far as the existing pins.  A bit of flux and some solder
>> to hold it in place and the busted connector now looks just like a
>> perfectly good one!  Hoo-Boy... shades of McGyver!!  Now on to the next
>> problem!
>>
>> I took some pictures, but I don't think pictures are allowed on this
>> reflector.
>>
>> Dave K1WHS
>>
>> ______________________________________________________________
>> R-390 mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/r-390
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:R-390 at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
> ______________________________________________________________
> R-390 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/r-390
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:R-390 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>