Question about Televison & Video
If you have used the VCR a good bit, the drum may need cleaning.
VCRs derived their synchronization from the recorded tape and if the heads are contaminated, the sync signal may not be getting through often enough to stabilize the tracking.
This is not a fun thing to do but I once serviced these and it can be done with care and cure the problem.
You will need cotton swabs and (preferably) some pure alcohol (not rubbing alcohol). Gaining access to the drum requires removal of the housing and perhaps, in a combination unit even more, keeping mind that both of the decks works with astoundingly small signals; relatively low voltage signals and an amazing precision in the mechanisms.
If you can gain access to the drum, do NOT ever touch the shiny surface of it with fingers since the oil on the skin can really screw things up.
You can rotate the drum with a finger on the top of the drum and hold your alcohol wetted swab gently against it while rotating the drum.
If the drum is the cause of the problem, you should see some dark deposits build on the swab. If fibers catch in the opening for the heads, you will have to rotate it in the other direction while holding a tissue gently against the drum; no fibers from anything should remain snagged on the drum, otherwise your efforts will be for nought.
Posted on Sep 13, 2009
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