15 Jan
2011
15 Jan
'11
10:10 a.m.
Oh, I have other heads. Two more in fact (if you count
the other drive
which apparently has a working head and logic board but seriously poor
speed regulation), plus the single-sided drive. The plan is to design a
Woudln;'t it be easier to fix the speed cotnrol of that drive? Perhaps
it's a motor problem (if it really is a cheap cassette-type motor, I could
believe one of the windings was open). I can't beleive the speed control
circuitry is that complicated.
double-sided logic board, but try it on the SS drive,
then move it to a
DS drive to check the head-switching stuff.
They were veryt common at one time. The 'business end' was a soft wiron
rod about 7 or 8mm in daimeter with a shaped tip. That sould get between
the heads of most drives I think.
As I said, I have noi dea if they ar still made, but I can't beleive
they are rare on Ebay...
-tony
However, you can demagnetise disk drive heads
with a tape hard
demagnetiser ('defluxer' in some books). Basically a coil with a soft
iron cor that's connected to the mains through a push switch. Put the tip
of th core on the head, press the switch, slowly move it away to arm's
length and then (only then) release the button. I have no idea if you can
still buy such things, but they must turn up on E-bay, or I guess you
could make one.
A degausser in other words?
I don't think I've ever seen one small enough to go between two disc
heads... or even into a tape deck for that matter.