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Home Forums Product Discussion & Questions BeoCord Beocord 5500 will not stop

Viewing 7 posts - 1 through 7 (of 7 total)
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  • #45609
    herrit
    BRONZE Member

    I have just replaced the two belts within my Beocord 5500 and powered it up. Both belts seem to be doing their job.ย When I press Play, FF, RWD & Turn on the main keypad the cassette transport mechanism does what one would expect, and the tape goes in both directions. If I press the Play button on the fascia it starts and stops. (The drive pins continue to rotate for ~4 seconds).

    But … if I press Stop on the main keypad, whilst the tape mechanism stops & the pinch rollers retract, the drive “pins” do _not_ stop rotating, unless I press Play on the fascia twice, and/or turn off the power.

    So it looks like the Stop button on the control panel is only activating the head & pinch roller retraction, and not stopping the drive motor. I have undone & re-seated the ribbon cables, & I am 99.9% sure they are good. I never needed to remove the ribbon cable that goes to the main control panel, so I can’t see how I could have mucked that up.

    Any ideas? Whilst I have downloaded the Service Manual, interpreting the electrical diagrams is beyond my pay grade.

    Many thanks!

    #45610
    filip_kbh
    BRONZE Member

    Not sure what you mean by “drive pins” … a picture?

    Location: Copenhagen
    #45611
    Glitch
    BRONZE Member

    I assume that you are asking about the capstans?

    I’m not familiar with the BC5500, but on other Beocords the capstan turns whenever the deck is not in standby.

    Glitch

    #45612
    herrit
    BRONZE Member

    Sorry for not being clearer. By “drive pins” I mean did mean the capstans, yes – I had thought that the capstans were the plastic “gears” that go through the centre of the cassette. My bad.

    • When I turn the deck on the capstans (and flywheels below etc) are stationery
    • When I press PLAY (on the slide out control panel or front panel or Master Control Panel) the capstans rotate & the tape plays
    • When I press STOP on the fascia the tape & the capstans stop. (The capstans actually continue to rotate for ~4 seconds, then stop).
    • When I press STOP on the slide out control panel OR the Master Control Panel the tape mechanism stops & the pinch rollers retract, BUT the capstans do _not_ stop rotating, unless I press Play on the fascia twice, and/or turn off the power.

    I assume that you are asking about the capstans? Iโ€™m not familiar with the BC5500, but on other Beocords the capstan turns whenever the deck is not in standby. Glitch

     

    Thanks @Glitch – it looks like what I have then is “normal” for a B&O tape deck. But it does seem strange behaviour to me, and can’t do much for prolonging component wear.

    #45613
    Glitch
    BRONZE Member

    But it does seem strange behaviour to me, and canโ€™t do much for prolonging component wear.

    For some bearing technologies, the highest wear occurs when the mechanism starts. I think that this is because motion is needed to create and maintain an oil film. Bearing wear is negligible after the bearing reaches equilibrium. B&O probably made this design decision in order to minimize wear.

    Glitch

    #45614
    Dillen
    Moderator

    It wears out the motor brushes instead.
    Anyway – your deck acts normally.

    Martin

    #45615
    Glitch
    BRONZE Member

    It wears out the motor brushes instead.

    Good point.ย  The brushes certainly wear out (and don’t appear to be a serviceable part).

    Glitch

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