Fixing flakey floppies

william degnan billdegnan at
Tue May 23 19:16:41 CDT 2017

Warner...get rid of old grease and replace if you have it, like an early
MAC Apple drive benefits from.  Might help

Bill Degnan
twitter: billdeg
On May 23, 2017 8:13 PM, "Warner Losh via cctalk" <cctalk at>

> Greetings,
> I have three flakey floppies. I wonder if they are worth fixing. Two are
> TEAC FD-55FRs. One appears to not report the INDEX mark, the other works
> well until around track 35 or so then fails... The third floppy is a 1.2 MB
> YD-380. It won't reliably move the head...
> I've tried cleaning the heads (which rehabbed a forth drive: a TEAC
> FD-55GFR) on these drives a few times. I'm thinking that it's too much
> hassle and I should just trash them, at least the YD-380. I have 3 1.2MB
> drives that work. The 55FRs are desirable to have working since I can put
> them in a Rainbow, but even at ebay prices it isn't worth more than an hour
> of my time to rehab.
> Before I do that I thought I'd see if there was something simple I can do.
> I did all my testing with the kryoflux board on a known-good disk (720k
> 5.25" drive so it tests both sides at the normal density and tests all 80
> tracks w/o using the high density mode so the FRs can read it).
> Warner

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