Shugart 800 spindle bearings (Re: Shugart 800-8 media centering problem)

Jay Jaeger cube1 at
Tue Aug 18 17:25:09 CDT 2015

On 8/18/2015 4:11 PM, tony duell wrote:

>> Yeah, but the TIP31A part is cheap, and is free air mounted on its leads
>> - it isn't screwed down.  I'd rather do the repair nicely.  Anyway, it
> Sure... 
> What I would do is bolt a tag + wire onto the tab of the old transistor (don't
> tell me you don't keep solder tags and small nuts/bolts (M3, 4-40 UNC, whatever)
> 'in stock' and get it running for the moment. You can then carry on debugging the
> drive

Yes, I do have them.  But it really isn't worth it - the parts are due
to arrive tomorrow.  ;)  Thief River Falls, MN isn't very far from
Madison, WI.  ;)

>> gave me an excuse to order a 750 ohm resistor so that replacement
>> matches, instead of the 2 x 1.5K parallel pair I had put in.
> And also order a replacement transistor and resistors and fit them when they
> arrive.

Already replaced all the resistors that showed any sign of stress.


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