Re: Help with JVC HR-S8000U SuperVHS VCR

From: Vincent Poy (vince_at_WURLDLINK.NET.noSPAM)
Date: 09/06/04 

Date: Mon, 06 Sep 2004 13:38:27 GMT

Which 2 or 3 small screws are you referring to? I have the bottom off now
and it pretty much looks like the pics here:

http://www.studiosoundelectronics.com/mbk-42.htm

Thanks!

Cheers,
Vince

"JVC Dude" <wilkinsons.hifi@talk21.com> wrote in
news:h0Z_c.189$5%4.150@newsfe3-win.ntli.net:

> Ok I've just researched the HRS8000. we never had that here. Its the
> same mech as our HRD530 but with SVHS from 1988 ish
> Forget the stuff about the sensors, thats on much more modern stuff
> like our HRS7000/8600 the nearest model numbers.
> Unplug it, take the bottom off, and carefully tighten the 2 or 3 small
> screws fastening the green pcb's onto the bottom of the mech, it will
> probably be a loose one causing a bad earth. and perhaps your
> symptoms. If not then you could have numerous other things like a
> shorting pole on the capstan motor etc.
>
> Also as reported by Mark, the membrane switches can be troublesome,
> but usually just inactive buttons. they gave most trouble when juices
> were spilt into them!
> Since this mech was used in Fergusons-UK (don't know what brand US
> have for that- Thomson?) and Toshibas there should be many time served
> VCR tech out there with experience so it doesn't have to be a JVC
> seervice centre necessarily.
> Hope this helps
> AW
>
>
> "Vincent Poy" <vince@WURLDLINK.NET.noSPAM> wrote in message
> news:Xns955C33F3B40F4vinceWURLDLINKNET@208.201.224.154...
>> I didn't realize you were in Europe but from what you're saying, it
>> seems like it doesn't really need any parts replaced but rather just
>> labor. There is a place locally that charges $US35 + labor but I know
>> they are
> n't
>> factory authorized and I wonder if being factory authorized will make
>> a difference or not. Where exactly is the right hand sensor located
>> or what does it look like?
>>
>> Since you might be familar with this, I had a Mitsubishi HS-U70 SVHS
>> VCR that failed a few years back and it had like missing audio as
>> well as missing color and the problem seemed to have been bad
>> capacitors but when
> I
>> shipped the thing to be repaired, it was fixed but shipping caused
>> the Control Audio Head to not be aligned and the guy I think
>> readjusted it.
> It
>> will play any tapes it records but when I take the tape to the JVC
>> HR- S8000U, it will only show scrolling black & white with distorted
>> audio and also, any tape that the Mitsubishi recorded on can't be
>> re-recorded with the JVC, is this just a alignment problem as the guy
>> that fixed it didn't have the factory jig for proper alignment.
>>
>> Cheers,
>> Vince
>>
>>
>>
>>
>> "JVC Dude" <wilkinsons.hifi@talk21.com> wrote in
>> news:S4Y_c.177$5%4.88@newsfe3-win.ntli.net:
>>
>> > I would suspect that the soldering under the right hand sensor may
>> > be dry jointed .
>> > If you aren't familiar with repairing equipment then don't try to
>> > cure this yourself, since it involves stripping the deck out, then
>> > removing the main board (although some models access from
>> > underneath may be possible.) Its not easy!! Also the mains psu
>> > capacitor can retain approx 380Volts- just waiting to shake hands
>> > with anyone who doesn't know wheres safe and wheres not!
>> >
>> > Your supposition is correct re the FF button it would FF when
>> > turned on or if 2 buttons are effectively pressed, then other odd
>> > symptoms may occur.
>> >
>> > Remember as I said these units are very sensitive to light. There
>> > was a mod to cover the right sensor (a slim 2" black LED type of
>> > thing standing centre right of the mechanism)- its use is primarily
>> > to detect if the tape is at the beginning and then shuttle forward
>> > off it.
>> >
>> > As to what you should pay, I would think £30-£40 to cover an hours
>> > time would be typical- however it may not be this sensor and only
>> > an engineer with the top off, probing around could really correctly
>> > diagnose this.
>> >
>> > Andrew
>> >
>> >
>> > "Vincent Poy" <vince@WURLDLINK.NET.noSPAM> wrote in message
>> > news:Xns955C252427CFEvinceWURLDLINKNET@208.201.224.154...
>> >> This VCR doesn't have a jog wheel. If if was the FF button then
>> >> wouldn't it FF even in the stop position?
>> >>
>> >> Cheers,
>> >> Vince
>> >>
>> >> "Mark D. Zacharias" <mzacharias@yis.us> wrote in
>> >> news:2q2r5dForp01U1@uni-berlin.de:
>> >>
>> >> >
>> >> > Sounds to me like the FF button or jog wheel may have a problem.
>> >> > Seen things like this before.
>> >> >
>> >> > Mark Z.
>> >> >
>> >> >
>> >> >
>> >> > "Vincent Poy" <vince@WURLDLINK.NET.noSPAM> wrote in message
>> >> > news:Xns955C1236F8091vinceWURLDLINKNET@208.201.224.154...
>> >> >> Vincent Poy <vince@WURLDLINK.NET.noSPAM> wrote in
>> >> >> news:Xns955C10477773vinceWURLDLINKNET@208.201.224.154:
>> >> >>
>> >> >> > "JVC dude" <wilkinsons.hifi@talk21.com> wrote in
>> >> >> > news:413c1913$0$49773$ed2e19e4@ptn-nntp-reader04.plus.net:
>> >> >> >
>> >> >> >> Hi Vincent,
>> >> >> >> Is there a lot of light getting in through the top/side?
>> >> >> >> these decks have optic sensors and can be tripped into doing
>> >> >> >> strange modes with light otherwise sounds like a faulty
>> >> >> >> switch contact or something similar. when you say play
>> >> >> >> button do you mean on the set or the remote. ~Its possible
>> >> >> >> the remote if someting was spilt into it may do that. if its
>> >> >> >> not related to the remote then there may be a faulty switch
>> >> >> >> on the front panel. its certainly not a common problem. I
>> >> >> >> presume you've unplugged and plugged in again to reset the
>> >> >> >> machine!
>> >> >> >>
>> >> >> >> Other possible causes, dirty mode switch contacts, or
>> >> >> >> poss a capstan motor control fault , but that would be very
>> >> >> >> rare. its more likely to be one of the above.
>> >> >> >>
>> >> >> >> hope this helps
>> >> >> >> AW
>> >> >> >
>> >> >> > Hi AW:
>> >> >> >
>> >> >> > Right now, there has to be a lot of light as I was trying to
>> >> >> > see if things are working with the cover off but originally,
>> >> >> > the cover was on when the problem happened. What is weird is
>> >> >> > that randomly, it will decide to play a tape correctly. As
>> >> >> > for the play button, I'm talking about the button on the
>> >> >> > front panel and not the remote as I haven't used my remote in
>> >> >> > a few years. I've already did the plug/unplug a few times
>> >> >> > just to make sure that wasn't the problem. I'm just trying to
>> >> >> > figure out will this be a expensive repair since I see a lot
>> >> >> > of repairers that aren't factory authorized but don't most
>> >> >> > problems need a service manual or will equipment tell them
>> >> >> > what is wrong? Since it seems lots of places have a fixed
>> >> >> > labor rate but then you have to pay for parts and I hope they
>> >> >> > don't randomly change out parts.
>> >> >> >
>> >> >> > Cheers,
>> >> >> > Vince
>> >> >>
>> >> >> I just put the cover back on and the first play of the tape
>> >> >> plays normally but then the next play, it does the same Play +
>> >> >> Fast Forward mode again.
>> >> >>
>> >> >> Cheers,
>> >> >> Vince
>> >> >>
>> >> >
>> >> >
>> >> >
>> >>
>> >
>> >
>> >
>>
>
>

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