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Technics RS TR 373 tape doors won't open

Discussion in 'Troubleshooting and Repair' started by art blank, Jul 10, 2016.

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  1. art blank

    art blank

    1
    0
    Jul 10, 2016
    Tape deck has worked fine forever(20 years?). Haven't used for a few months. Now when i push buttons(both sides) to open the tape door, won't open. Circuits seem to be on(panel is lit). ??
     
  2. 73's de Edd

    73's de Edd

    2,771
    1,158
    Aug 21, 2015
    Sir art blank . . . . . . .

    But . . .BUT . . .BUT . . .BUT . . .that thing is getting old and feeble and you shouldn't expect it to be on duty 24/7 for your beck and call for opening its door for you ! . . . . . after all . . . . .and that's being spelled with a HEAVY . . . .
    A l l l l l l l l l . . . . .of these years.

    One normally expects to find an el cheapo mechanically latched and spring loaded door used for that function.

    On your unit with the "soft touch " . . . your pressing against a "tact" switch, should then engage its electronics to activate a motor driven geared ? belted ? performance of those open / close functions.

    Now on your part, you are going to have to crack some eggs to make that omelet . . . . . .
    (PULL the units top dust cover .)

    Fortunately many years back, I had a second nephew , twice removed, that had one of those units in a complete Technics stacked set up and he got its service manual and had me repair it for him . . . .however,it was having a no sound problem.

    With your MOST informative info, already presented, with it affecting BOTH decks, we can rule out just about everything but a power supply or interconnectivity problem COMMON to both units..

    It looks like the unit might rely upon a constantly running reel drive motor that ALSO intermittently mechanically kicks in and supplies the mechanical drive for the door mechanism by the activation of an associated solenoid.
    Limit switches L 801-2-3-4 tell it when to start or end its mechanical engagement.

    I will initially send you this "snippet" , placed just below, of just the first preliminary checks, to do.
    If you will send me a one of this forums "conversational" messages with your Email addee, I can then send you the units whole service manual and schemas . . . a la . . . Pee Dee Eff.

    Now . . . .what'cha . . .gonna find ?

    REFERENCING:

    [​IMG]

    [​IMG]


    73's de Edd
     
    Last edited by a moderator: Jul 16, 2016
  3. Swampthaing

    Swampthaing

    1
    0
    Jan 30, 2020
    Hey awsome checklist.
    So I have "somewhat" of a similar tragedy at hand..

    After I press the button to close the deck, the deck closes.....then falls open....

    Any ideas??
     
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