Re: JVC VCR

From: Femme Verbeek ("Femme)
Date: 10/13/04 

Date: Wed, 13 Oct 2004 02:57:50 +0200

"JVC dude" <wilkinsons.hifi@talk21.com> schreef in bericht
news:416c2c92$0$59469$ed2619ec@ptn-nntp-reader03.plus.net...
> Hi For what its worth we here in the UK have had many problems with
the
> DD drum system.
> They all have problems with the small black plastic gears inside the
tilting
> mech. Basically the plastic splits from the metal shaft to the
outside,
> possibly due to being too tight on the shaft!
> Basically the mech when initialising runs fwd then back whilst reading
the
> opto pulses. If the count isn't correct/fast enough an error is
assumed and
> the VCR will go into standby mode. The gears seem to split easier when
the
> machine is used in hot and/or smoky environments.
>
> As to diagnose this, you will usually hear ticking noises from the
DDrum
> when first powering up. If the gears are ok then it will sound smooth
and
> you need to look elsewhere.
>

I did not hear any ticking. So far the VCR worked always without error.
Just 1/2 a year after the end of 4 years warranty it breaks down.

> I have had NO problems with mode switches on these units!
>
> For whatever reason JVC do not supply new gears, and only a new drum
is the
> answer. As you say, it costs a fortune.
> Having tried a few times to swap bits around to make a good unit, I
can tell
> you its dammed tricky to setup all 4 adjustment points so that it will
track
> the tape properly.
>
> I think there may be a work around by disabling the gears, at least
the unit
> would initialise, but auto tracking and still/slo-mo might be
adversely
> affected.
>
> Anyone else any experience on these DD mechs?
>

Thanks to all for the answers.
I learned that this vcr has a tilting mechanism for the heads in order
to avoid striping, but is also weak in construction.
I'll try a closer inspection on this mechanism, but chances are that it
is beyond repair. Your answers convinced me that the repair shop could
be right.

regards
Fem Verbeek

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