On 05/23/2017 05:40 PM, Fred Cisin via cctalk wrote: > On Tue, 23 May 2017, Warner Losh via cctalk wrote:
> In addition to cleaning the heads, look at the parts that slide when the > head moves. The old grease is probably in bad shape by now. With a > little solvent (WD-40 is NOT a solvent), clean the old grease and > re-lube them. I used to use a molybdenum disulfide grease that I had > around - I have no idea what the "RIGHT" grease would be. > > Teac 55s don't often need the radial alignment adjusted, but it could > happen. The failure after track 35 could be alignment, but it could > also be the grease. Caked or dry grease can even occur on NOS drives. I was unpacking some new Samsung SFB-321 3.5" drives. They didn't pass diagnostics. Popped them open and the leadscrew grease had turned yellow and caked. Cleaned the grease off with some Perc, put a very thin film of silicone grease on the leadscrew and the drives were good to go. You can see if you've got an alignment problem if you format a floppy in the suspected drive and you can read it from end to end without error. IMD is good for this sort of thing. --Chuck