From: utzoo!watmath!watcgl!dmmartindale
Newsgroups: net.audio
Title: Re: Pinch rollers and biasing
Article-I.D.: watcgl.103
Posted: Thu Jan  6 09:33:14 1983
Received: Fri Jan  7 00:51:50 1983
References: grkermit.259

Ok, can Freon TF be used to clean pinch rollers?  It seems to be what's
recommended for cleaning all the parts of our computer tape drive - capstan
(which seems to be rubber-covered), rubber pads on supply reel hub, heads,
everything.  The stuff is now sold by Radio Shack so should be available to
almost everyone out there.  And it doesn't attack plastic (even alcohol does
attack some plastics).  Just don't get it into any bearings - it's really
good at dissolving oil or grease.
Re magnetization of heads: There is no bias current when you're just playing
tapes, and most recorders are used for playing most of the time.  Virtually
all car decks are play-only.  I believe that the magnetism builds up during
play, not recording.

Dave Martindale