D9060 Help Needed

From: Jim Brain <brain_at_jbrain.com>
Date: Mon, 30 Nov 2009 02:50:36 -0600
Message-ID: <4B13875C.4080500@jbrain.com>
I've just acquired a CBM D9060 HDD.  The logic board would not power up, 
and I found the 5V power supply rail was not generating any voltage.  I 
traced it back to the 5 pin connector that connects the PSU with the 
transformer.  The "gnd" pin (middle tap of the transformer" had gotten 
hot at one point, metling part of the 5 pin connector and failing to 
make contact with the pin on the PSU board.  After making temporary 
repairs, 5V is once again going to all boards.

Bootup ?ds$ gives 73, CBM DOS 3.0...., and any subsequent command gives 

I noticed the lower LED was wired backward, and there is a possibility 
the cables to the HDD are backwards.  Anyone have pics they can share or 
a way to determine correct orientation?

I noticed this note about the cables:


Any other ideas to try?  Anyone have a working D9060 that might want to 
try out the boards?


Jim Brain, Brain Innovations                                      (X)
Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times! 
Home: http://www.jbrain.com

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Received on 2009-11-30 09:00:03

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