[sdiy] switching jacks

[David Moylan]

I was also taught the money method to clean contacts on the plug in 
cards for large format tape machines such as the Ampex MM1200.  It works!

luther rochester wrote:
> On 2/2/11 10:51 AM, David G. Dixon wrote:
>> Yes, I gleaned as much from the web searching I did on the topic.
>> Apparently, one preferred method of cleaning them is to slide a dollar 
>> bill
>> between the contacts, as this has just the right amount of abrasiveness
>> without actually damaging the contact point.  Of course, with that
>> funny-looking American money they have now, who knows?  :)
> 
> 
> This is the same method we use to clean the contacts on 
> electromechanical pinball machines! A business card works well too.
>