Question about JVC HR-S3901 S-VHS VCR

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Loud noise on rewind

I've had a JVC HR-S3901/3911U VCR for a few years now and have had no problems, but last week, I went to rewind a tape (without the video playing), and when it went to go into the high rewind speed, it made a horrible grinding/clicking sound, and then went down to the slow rewind speed so that it takes almost 10 minutes to rewind an hour of tape. I thought it was the tape, but I tried three different tapes, and the same thing happened. It plays and records fine, and rewinds and FF in the slow speed without problems. Tonight, I took it apart, and saw that the same thing happens on fast-forward too, except the tape reels don't move at all, and then it makes the loud noise and the machine shuts itself off. I couldn't figure out what the problem is. Does anyone have any ideas? I'm sure this could turn into a bigger problem if it's not fixed. Thanks!

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  • Anonymous Jan 03, 2009

    I have this same problem where the machine makes loud noises in the fast rewind mode. I took it apart and found a spring loose in the bottom of the machine. Does anyone know where it goes? The spring is shaped like a V. Coil with one straight leg and one with a 90 degree bend at the end.

    David Long

  • pelican810 Jan 03, 2009

    I have the same problem where it makes the grinding noise in the fast rewind mode and then goes into the slow rewind mode. I took it apart and found a loose spring. The spring is shaped like a V. A coil with two legs; one straight and one with a 90 degree bend at the end. Does anyone know where the spring goes?
    David Long



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You may have an idler gear wheel which has been damaged- perhaps broken/worn gear teeth or something afoul in it's drive mechanisms. Check this idler which sits down in between the supply and take-up spindles. You should be able to see this with no tape loaded. This idler should also move freely from supply to takeup- if it is sticky in movement this could be the problem. If your idler is broken, you may be able to replace it. Check with a service center- or a parts supplier. MCM electronics is one such supplier- there are others.

Posted on Oct 02, 2007


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