PDP11/03 BA-11M Front panel switch replacement

Jon Elson elson at pico-systems.com
Mon Feb 26 20:41:51 CST 2018

On 02/26/2018 04:18 PM, Douglas Taylor via cctalk wrote:
> On 2/25/2018 10:40 PM, Jon Elson via cctalk wrote:
>> On Sun, Feb 25, 2018 at 7:50 PM, Douglas Taylor via 
>> cctalk < cctalk at classiccmp.org> wrote:
>>>> I have a BA11-M box with the usual front panel control, 
>>>> however it was
>>>> damaged and all three switches have been sheared off.  
>>>> The LED's and the
>>>> circuit card that connects to the power supply appear 
>>>> to be OK.  I would
>>>> like to repair it and put it back into service.  Is 
>>>> there a replacement for
>>>> those switches?
>> In general, many old switch patterns are still made.  
>> Often, they have a manufacturer's name and part # on the 
>> body of the switch. Some common makes from back then were 
>> C&K and Alco.
>> Jon
> Good advice, I went and looked at another box I had and 
> the switches are indeed C&K models 7101 and 7108.  Looking 
> on ebay since they are obsolete, finding the model with 
> the paddle actuator will be the trick.
You should really get on Digi-Key or other distributor who 
has a good web site and see if you can find a new model that 
fits the same mounting hole and PC board pattern.  Even if 
C&K obsoleted the exact model, they very likely still make a 
compatible part. Digi-Key shows 408 items when I search on 
"C&K 7101".  Some of those REALLY look like stuff I remember 
in DEC equipment.


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