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Obscure TV & VTR repair question

Discussion in 'Electronic Repair' started by Cartrivision1, Feb 19, 2007.

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  1. Hi, I picked up an old Teledyne/Packard Bell TV console with a
    integrated Cartrivision video tape recorder. For those who are not
    familiar with this, the Cartrivision was the first mass produced
    cartridge based video tape recorder for home use. This was on the
    market in 1972 or so.

    I got the thing for free but I had to drive a ways and it was very
    heavy lifting into my home. They sure don't build them like they used
    to. Anyway, it took a couple hours of warming up and pushing the on/
    off the power button to get any life to the thing. The sound was fine
    but the picture left a lot to be desired. I assume the picture tube
    is bad because there is just a steady white horizontal line in the
    center of the picture, along with some rolling lines.

    The VTR section did not work either. I figured out why as I looked in
    the back this morning. The power to the tape section had been
    disconnected and the 7 audio/video wires that were supposed to connect
    to the interface on the TV chassis were cut and tucked behind the
    signal processor on the VTR side. I initially thought that the tape
    recorder just stopped working and they wish to isolate the TV. BUT, I
    noticed when looking at the front controls that the chassis is a
    "Quasar II".

    The chassis does not fit totally into the space in the console as
    there is maybe a good 1/4 inch gap on each side or so. So, I am not
    sure if someone has modified this TV or if Teledyne would actually use
    a Quasar chassis. Anyone know if this could possibly be the case?
    Could a Teledyne picture tube work with a Quasar chassis? They both
    have 2 tubes, 2 in the chassis and 2 at the base of the picture tube.
    Because without the proper chassis and interface this is just a heavy
    paperweight, though the Cartrivision components have some value.


    thanks,
    CTV
     
  2. Guest

    thank god
    nothing to do with a tube fault.

    God help you getting that fixed, esp if you cant handle a simple tv
    fault.

    what do you mean by '2 tubes'?

    If you do what you can and still cant get any of it working, maybe
    another enthusiast could get it up and running again. Not sure what
    the attraction would be with cartrivision though.


    NT
     
  3. Perhaps collectable value. :)

    If there is light and lines on the screen, you're close. That means the
    high voltage power supply and deflection is working. As noted, not the
    picture tube. Possibly tuner or other signal related problem. Bad
    connections, bad electrolytic capacitors, a missing power supply voltage.
    The fault may have been present before it was "retired". You'll need a
    schematic and some troubleshooting skills to get it going but the TV can
    probably be made to work but don't expect the performance of modern TV.

    As far as the video section, that's probably more of a challenge but might
    be possible.

    --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
    Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
    +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
    | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

    Important: Anything sent to the email address in the message header above is
    ignored unless my full name AND either lasers or electronics is included in the
    subject line. Or, you can contact me via the Feedback Form in the FAQs.
     
  4. Ken Weitzel

    Ken Weitzel Guest

    Hi Sam...

    With the greatest of respect; looks like you may have over-looked the
    horizontal white line.

    Looks to my old eyes like he's just lost all vertical deflection. Don't
    know the set, but if it's a tube type, perhaps as simple as replacing
    the vert out tube if he can find one?

    Take care.

    Ken
     
  5. Hi. Thanks for all of the replies. My question though was more of
    would Teledyne/Packard Bell produce a console set with a Quasar II
    chassis? The reason I need to know is that if it has been modified,
    the interface for the VTR would be on the original chassis and this
    would now be totally useless as a collectors item. The TV and
    recorder can always be fixed.

    Another clue is that the back panel has some cutout for fine tuning
    pots, reset button, etc. that do not correspond to anything on the
    back once the cover is taken off. So, either someone has modified it
    or they changed their design mid-production and went with a different
    design. Though I believe this was their stereo model so maybe they
    went with a different design for their stereo model?


    thanks,
    CTV
     
  6. Adrian C

    Adrian C Guest

    I was going to suggest that you give the owner of
    <http://www.angelfire.com/alt/cartrivision/> an email, then I realised
    by your email address it's you! Good website.

    At that time wasn't Quasar part of Motorola? Any OEM connections there?

    I never knew before about this format, but then I'm a fellow from the UK
    & the first cassette handling video recorder sold here was from Philips,
    the N1500!
     
  7. Guest

    I guess you tried alt.tech.obsolete


    NT
     
  8. Guest

    I guess line output and EHT diode valves.
    always nice to see a daft answer


    NT
     
  9. Ken Weitzel

    Ken Weitzel Guest

    Hi...

    I'd be guessing you're speaking of horizontal output and the damper
    tubes... the one with the second anode cap being the horiz output.

    There should be another with a 2nd anode cap inside a cage of sorts...
    that will be the high voltage rectifier.

    None of these is the reason for the difficulties you're experiencing.

    Take care.

    Ken
     
  10. He did say something about "rolling lines" so I sort of assume there is
    some vertical. But, perhaps that was wishful thinking.

    If it does use a vertical output tube (gasp!), then he just jumps into
    his time machine and dials in the 1970s when every corner drug store
    had a tube tester and a stock of new tubes. :)

    --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
    Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
    +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
    | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

    Important: Anything sent to the email address in the message header above is
    ignored unless my full name AND either lasers or electronics is included in the
    subject line. Or, you can contact me via the Feedback Form in the FAQs.
     
  11. Sorry, given the size of the chassis, the cutouts that don't match, and
    the cut wires, it sounds to me like someone installed a chassis from
    another TV.

    --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
    Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
    +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
    | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

    Important: Anything sent to the email address in the message header above is
    ignored unless my full name AND either lasers or electronics is included in the
    subject line. Or, you can contact me via the Feedback Form in the FAQs.
     

  12. Or he asks on where they whine that no
    one wants old TV tubes.


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     

  13. Why daft? People were collecting them six months after production
    stooped.


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  14. Guest

    Because stating the bleeding obvious is not especially constructive.
    The question is/was why do some think them worth collecting. To merely
    state that they do is empty headed.


    NT
     
  15. Empty headed? Plonk.
    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
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