Most common cause of a non-working SFD-1001 disk drive is a defective MOS 6530.
That chip is not to find anymore. My friend Ruud Baltissen find out how it can
be replaced with a 6532. I designed a PCB who will replace the existing adapter
PCB.

Look here:
http://www.baltissen.org/images/6530-1.jpg
http://www.baltissen.org/images/6530-2.jpg

I have a couple for sale for only 8 Euro, worldwide shipping included.
PM me if interested.

Regards, SAM

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