Fixing flakey floppies

Warner Losh imp at
Tue May 23 19:31:41 CDT 2017

Old grease where? I'm not familiar with this issue...


On Tue, May 23, 2017 at 6:16 PM, william degnan <billdegnan at>

> 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>
> wrote:
>> 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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