Question about Technics RS-TR272 Single Cassette Deck

6 Answers

Technics RS-TR515 Dual Cassette Deck

One drive tries to start and the auto-reverse immediately kicks in, it hunts back and forth, so some resistance or something is making the drive keep reversing and forwarding. The other drive will work in one direction for a couple of minutes, then it acts the same as the other drive, eg the auto-reverse kicks and it hunts back and forth.

Otherwise the deck produces sound OK.

It seems like the drives need lubricating. Is the auto-reverse mechanism tripped by resistance to movement?

I took the deck in to a repair, he said it wasn't worth fixing, so I would like to try it myself.

Thanks gents
Sam Brkich

Posted by on

  • 2 more comments 
  • sueisam Nov 09, 2008

    I see that you show a Technics RS-TR272 single cassette deck above. My query was about a

    RS-TR515 dual cassette deck. I trust that you will be providing advice on the RS-TR515 deck and not the other.



  • sueisam Nov 09, 2008

    Thanks very much, Guru, but I have alrady worked out that I can go in and try to fix it myself. I quoted the symptoms the drives were exhibiting and was hoping for some guidance as to the likely cause and the treatment. As both drives are acting the same, it seems that it is a common problem with a known solution.

    Regards
    Sam

  • sueisam Nov 09, 2008

    Thanks very much for the response, Reb19, very succinct and to the point.

    What sort of an animal is the auto-reverse sensor, eg can it be disabled so that the tape just runs to the end and stops?

    Regards
    Sam

  • sueisam Nov 10, 2008

    The Irish really do have their uses. Thanks very much IrishDruid for the magic response, greatly appreciated. I know how to tackle the thing now. I would have spent alot of time messing about otherwise.

    Thank you also, FixYa, great experience the first time round, very valuable.

    Regards
    Sam

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6 Answers

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I think the aurt reverse is triggered by tape pull tension, when the tape hits the end it senses the tension and reverses, you should be able to adjust this,

Posted on Nov 10, 2008

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  • Master
  • 2,712 Answers

There is generally a small plastic piece near the head which looks like a wedge. When this is depressed (as against a stretched tape when it reaches the end), it triggers a mechanism to start the auto-reverse.

I would suspect that this trigger is lose. Probably requires a new spring. Locating it is easy just look through the tape door and you should see a wedge-like thing somewhere between the two spools (usually near the end). Once you locate this, it is a matter of working backward to locate the trip mechanism.

Posted on Nov 09, 2008

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  • 449 Answers

Hi!!

try to open it locate the parts
that complicated!
or
clean it!!!

Posted on Nov 09, 2008

  • ronald suboc
    ronald suboc Nov 10, 2008

    try to unplug the sensor
    if you locate if


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In answer to your question about the auto reverse mechanism, yes it is tripped by resistance. As far as fixing it, have fun. You can try to lube the drives but I don't think that is the problem. The sensor in the auto-reverse mechanism is shot. Unless you can find a same model and replace the tape drives, you probably can't fix it. I am not just telling you this from a repair guy point of view. I actually had the same problem with a tape player. The thing honestly wasn't worth fixing. I would hang on to it in case you can find a replacement. Sorry.

Posted on Nov 09, 2008

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I think they told you that its not worth repairing because the device is already ild, so trying it by yourself will be OK, you can try to open the unit and check its parts for any broken piece inside it that might be causing the problem......

Posted on Nov 09, 2008

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  • Technics Master
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The auto reverse starts when the ftape gets in tension.

Posted on Nov 09, 2008

  • 3 more comments 
  • Ginko
    Ginko Nov 09, 2008

    The auto reverse is started by a little lever that press on the tape, when the tape oppose too much resistance to traction, the tape get in tension pushing the lever, and this starts the auto reverse.

    Either the tape is stuck (try more tapes), or the lever sensor is too sensible or faulty


  • Ginko
    Ginko Nov 09, 2008

    Since your problem is concerning the mechanics, talking about the RS-TR272 or on a RS-TR515 dual deck does not make a big difference.

    Both decks share the same tape deck mechanics.

    The Auto reverse is started by a plastic pin, placed near to the head, on the same line.

    Check that the pin is not stuck, if it is too sensitive you can shorten it a bit, but this can disable the auto reverse forever.


  • Ginko
    Ginko Nov 09, 2008

    Follow up : The auto reverse sensor is a plastic pin, I am try to find pictures, but I found none.

    Look near to the heads, in the line between the head and the traction wheel, inside the tape.

    You should see a plastic pin that press on the tape when the tape is in.

    To get the pin coming out you need to start the deck on play but without tape. To do so you press play and keep pressed the cassette sensors, that are one or two levers at the top hand corner.

    I also publish my previous comment for better clarity:

    Since your problem is concerning the mechanics, talking about the
    RS-TR272 or on a RS-TR515 dual deck does not make a big difference.

    Both decks share the same tape deck mechanics.

    The Auto reverse is started by a plastic pin, placed near to the head, on the same line.

    Check
    that the pin is not stuck, if it is too sensitive you can shorten it a
    bit, but this can disable the auto reverse forever.


  • Ginko
    Ginko Nov 09, 2008

    Follow up:

    I tried to find a diagram, but I found none, therefore you should follow my instructions to fix it:

    Unplug the unit.

    See if you can remove the small tape door and access the deck mechanism, if not you may need to take apart the unit to remove the tape door

    In this case, remove top cover, you will have to undo several screws at the back and at the bottom of the unit. Once you remove the top cover you will be able to access comfortably to the deck mechanisms.

    At one of the corners, either upper left, or lower right corner, depending on deck orientation, on the opposite side of the head, there is a plastic pin.

    That is the sensor that detects if cassette is in.

    Hold it and press play at the same time.

    The deck will start same as the tape is in.

    You can release the cassette sensor,

    On th opposite side of the cassette sensor you will see a pin coming out.

    If the pin stays retracted then is faulty, try unlocking it.

    If the pin comes out , but it is too sensitive you can resolve the problem by reducing pin lenght, auto reverse won't work anymore, but deck will work.

    Be careful that if you get problem on both decks that is not mechanic, that is just a mad control board.










    I also publish my previous comment for better clarity:

    The auto reverse sensor is a plastic pin, I am try to find pictures, but I found none.

    Look near to the heads, in the line between the head and the traction wheel, inside the tape.

    You should see a plastic pin that press on the tape when the tape is in.

    To
    get the pin coming out you need to start the deck on play but without
    tape. To do so you press play and keep pressed the cassette sensors,
    that are one or two levers at the top hand corner.



    Since your problem is concerning the mechanics, talking about the
    RS-TR272 or on a RS-TR515 dual deck does not make a big difference.

    Both decks share the same tape deck mechanics.

    The Auto reverse is started by a plastic pin, placed near to the head, on the same line.

    Check
    that the pin is not stuck, if it is too sensitive you can shorten it a
    bit, but this can disable the auto reverse forever.

  • Ginko
    Ginko Nov 09, 2008

    Follow up:

    In your case both drives have auto reverse problem , but they respond in different ways, the problem it is not logic but mechanic. Check the auto reverse and auto stop (the same pin sensor) mechanics.

    99% they are the problem.

    I am going offline now, here is late, if you have more queries, or I found a picture I will post within 24, or you can ask to the other experts.

    Bye
    ---------------------------------------------------------------------------------------------------------------------------------------
    I tried to find a diagram, but I found none, therefore you should follow my instructions to fix it:

    Unplug the unit.

    See
    if you can remove the small tape door and access the deck mechanism, if
    not you may need to take apart the unit to remove the tape door

    In
    this case, remove top cover, you will have to undo several screws at
    the back and at the bottom of the unit. Once you remove the top cover
    you will be able to access comfortably to the deck mechanisms.

    At
    one of the corners, either upper left, or lower right corner, depending
    on deck orientation, on the opposite side of the head, there is a
    plastic pin.

    That is the sensor that detects if cassette is in.

    Hold it and press play at the same time.

    The deck will start same as the tape is in.

    You can release the cassette sensor,

    On th opposite side of the cassette sensor you will see a pin coming out.

    If the pin stays retracted then is faulty, try unlocking it.

    If
    the pin comes out , but it is too sensitive you can resolve the problem
    by reducing pin lenght, auto reverse won't work anymore, but deck will
    work.

    Be careful that if you get problem on both decks that is not mechanic, that is just a mad control board.










    I also publish my previous comment for better clarity:

    The auto reverse sensor is a plastic pin, I am try to find pictures, but I found none.

    Look near to the heads, in the line between the head and the traction wheel, inside the tape.

    You should see a plastic pin that press on the tape when the tape is in.

    To
    get the pin coming out you need to start the deck on play but without
    tape. To do so you press play and keep pressed the cassette sensors,
    that are one or two levers at the top hand corner.



    Since your problem is concerning the mechanics, talking about the
    RS-TR272 or on a RS-TR515 dual deck does not make a big difference.

    Both decks share the same tape deck mechanics.

    The Auto reverse is started by a plastic pin, placed near to the head, on the same line.

    Check
    that the pin is not stuck, if it is too sensitive you can shorten it a
    bit, but this can disable the auto reverse forever.



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I am not saying it is unrepairable but that with what you come out in the end you could have made a better choice for a deck to buy.
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I am in Chicago and would look at it for you if you want.

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