14.17 Why do my old tapes squeak in my car cassette deck?
Description
This article is from the rec.audio.* FAQ, by with numerous contributions by Bob Neidorff others.
14.17 Why do my old tapes squeak in my car cassette deck?
One problem that will cause this is "binder ooze". The binder
is the glue which holds the oxide particles to the backing.
With time, this binder can ooze forward and actually get past
the oxide particles, so that there is sticky stuff on the
surface of the tape. When this sticky stuff goes past the
heads, it can cause a slight stick, which will sound like a
squeak. You won't feel it with your fingers, but it is there.
If you have a prized tape with this problem, consider baking
the tape in a home oven at a very low temperature, like 150F.
This might cure the problem by drying out the binder.
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