Re: JVC VCR HR-S4700U quickly powers down
From: Mark D. Zacharias (mzacharias_at_yis.us)
Date: 12/04/04
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Date: Sat, 4 Dec 2004 05:43:48 -0600
"Jumbaliah" <burnboy1000@hotmail.com> wrote in message
news:b83b4153.0412031228.47041b20@posting.google.com...
> "Mark D. Zacharias" <mzacharias@yis.us> wrote in message
> news:<318hmcF38jrbeU1@individual.net>...
>> Does seem like a problem with the reel clutch. Bad lubrication prevents
>> it
>> from switching back and forth properly. They can be fixed, but when you
>> take
>> them apart they tend to go, "Sproinggg!" and pop parts all over the
>> place.
>>
>> Mark Z.
>>
>
> When I rotate the clutch manually in a particular direction it does
> slide the idler gears into the supply reel. If I change the rotation
> on the clutch it just moves the idler gears between the supply and
> takeup reels. This test was done with the VCR off. Should the clutch
> be able to slide the idler gears into the takeup reel? Does the VCR
> have to be in the right 'mode' for this to happen?
>
> I haven't removed the clutch assembly yet but if I was to fix it how
> would you recommend I do it? I've read online that you can use rosin
> flux to repair clutches. I just wouldn't want to apply fulx to the
> wrong spot.
>
> Thanks for the help,
> burnboy
I'm not sure I read you correctly. If the idler gear does not switch
reliably from the supply hub to the take-up hub, then the problem is bad
lubrication on the center shaft of the idler assembly. It's been a while
since I've seen one, but there's a slit-washer or some other retainer set in
a scored "groove" on the metal shaft. Using a small pick or some such, the
retainer can be removed and re-used, but there is a chance that it will be
more prone to failing later. For this reason it's important not to damage
the retainer. When the retainer comes off, that's when the spring-loaded
parts tend to go flying, and then you'll be guessing as to their
re-assembly.
You shouldn't have to mess with the actual felt clutch portion.
Mark Z.
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