My Mac Plus (platinum) was running fine until yesterday. It was booting off a minimal 6.0.8 floppy. :b&w:

Now the internal drive immediately ejects the disk.

I did two things

1) I attached a non-tested A9M0106 Apple 3.5" external drive

2) I inserted an ancient 800k disk into the INTERNAL drive. (looks good on inspection)

The internal drive is now making a "swooshing" sound, which it never did before. :-/

http://youtu.be/suPO60OnS4Y

When I insert my system disk now it takes it in, makes a swooshing sound as it's attempting to read it and then ejects it immediately. It does the same with a Beyond Dark Castle game disk which it was previously able to read. :disapprove:

Do you think I need to clean the heads, or do I need a refurbished drive ? Or did the controller board blow when the old external drive was attached ?

Any thoughts are appreciated. It's very disappointing.