Memorex 102 20MB Hard disk - Found It!

[Barry L. Kline]

dwight elvey wrote:

> 
>  I have a none destructive method of locating such shorts. It requires
> 
> a bench power supply and a good DVM.
> 
>  You set the supply on a low voltage and current limit at about 2 amps.
> 
> Place the outputs of the supply from end to far end of the 12V rail
> 
> ( not through the short ).
> 

This is a great system Dwight.  The only problem I have with it is the
requirement for a five digit DVM, and the fact that after you find the
short, you need to fix it.  This can be time-consuming.

My solution uses much the same procedure, except that I use an ARC
welder and connect that up.  With all of that current available, I don't
need to diddle around looking for the short -- the short gets vaporized.
 So not only will I find the short (by the flash) but the repair is done
at the same time.  This procedure never fails and can be a real time-saver.

Barry

p.s.  Please note that I'm kidding!   I don't post very often but I
really do enjoy reading what you're all working on.   I love the old kit
(particularly DEC stuff) and there's always lots to read about here.