Re: Apple ][ Europlus - power supply problem...

["bieling@terra.es" <bieling@terra.es>]

On Mar 9, 5:48 am, "myoldmac.net" <use...@myoldmac.net> wrote:
> On Mar 9, 3:12 am, aiiad...@gmail.com wrote:
>
>
>
> > On Mar 8, 4:26 pm, "myoldmac.net" <use...@myoldmac.net> wrote:
>
> > >  The Disk drive starts to run, the red LED is
> > > glowing straight, the Disk is cycling - but not booting...
>
> > > I tried a few DOS Disks - no booting at all.
>
> > > Any idea?-
>
> > You prolly blew one of the chips in the drive...  There is a chip in
> > there
> > that will go bad if you plug in wrong..
>
> > either that, or :
>
> > 1)disk drive dirty
> > 2)disk speed not correct
> > 3)disks are bad
>
> > Rich
>
> Thank you for the informations.
>
> Can you exactly tell me the name or position of this maybe blown up
> chip (it smelled a bit after first launch...)
>
> I have two other old Disk ][ drives with I/O errors - if they fail on
> head justage again I could try to swap chips.
>
> I will try another working drive from my Apple //e to see whats up.

As long as the electronics are ok, these two older Disk II drives can
most likely be resurrected just by cleaning the head with a cotton tip
+ alcohol, and making sure that the head assembly slides freely (clean
with alcohol the sliding guides / head assembly's (bronze?) bushings).

--
Jorge.