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Record Player no sound

Discussion in 'Electronic Repair' started by techforce, Jan 6, 2004.

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  1. techforce

    techforce Guest

    Soldering, Resoldering and unsoldering are the Foundation skills of a good
    Service Tech.
    I learned by grabbing TV Chassis from The Dumpsters in the Apartment Complex
    Nearby the Home where I grew Up.

    Went to Radio Shack, bought a Cheapie Soldering Iron for like $10 and needle
    nose for like $5 - and proceeded to spend night and Day Desoldering every
    component I could see in sight. After Many burnt Fingers and blisters, I got
    quite good at it.
  2. ebola

    ebola Guest


    ....that was exactly the reply i was hoping for... i think i will do
    exactly as you've mentioned here! sounds like fun...

    my next question is on checking the integrity of existing wires, (for
    power?) and then selecting the correct wire to replace (i'm quite sure
    that one of the two wires leading to the RCA output on this record
    player are disintegrated, but i want to test the other one).

    ...So, here are my two questions:

    -how do i check the integrity of a wire (this is a really basic
    question, i know... but i know there's a device for this, but not sure
    what it's called, what to get, etc.)

    -how do i determine what kind of wire i should replace with? could i
    simply remove the disintegrated wire, and bring it to radio shack??

    yikes! i'm out of my 'element'... <lol>

  3. tempus fugit

    tempus fugit Guest

    Since this is an old record player, I wouldn't worry too much about testing
    the integrity of the wires (although you could do that with an ohmmeter,
    which is one of the functions of a multimeter). Just grab some speaker wire
    and replace the old wires with that. Should do the job nicely. I'm assuming
    that the wires you refer to got to the RCA jacks that are to be connected to
    a speaker.
  4. Tim Auton

    Tim Auton Guest

    Battery + light bulb (or buzzer). Use the wire you want to test as
    part of the circuit (you don't need to remove it, use clips or hold
    probes [wires] to either end). Put it in a case and sell it at Radio
    Shack and you can call it a "continuity tester". If you have a
    multimeter then it might have a continuity test function, put one
    probe at each end of the wire and if it buzzes it's OK. If you have a
    multimeter but it doesn't have a continuity test function then you can
    measure the resistance of the wire. It should be a tiny fraction of an
    ohm, if measurable at all. If you want to get more advanced then
    wiggle the wire while you test it :) Actually, wiggle it anyway, it
    may have an intermittent contact.

    There are more advanced techniques, but for you to learn them for this
    job would be harder than just replacing the wire (and likely
    unnecessary). You'd also need equipment which I'm guessing you don't
    You don't need to match replacement wires in the same way you would
    have to match, say, a replacement transistor (in this application
    anyway). Something equally as fat as the one you're replacing will be
    If you want to make a habit of this kind of thing get a multimeter (if
    you don't have one already) £20 ($30) should get you a serviceable
    one, though you could pick one up for £3 ($5). If you get serious
    you'll want an oscilloscope. A really awful analogy from one software
    guy to another: multimeters are the printf debugging of electronics,
    oscilloscopes are the fully-fledged debugger.

    Finally, and going even further off-topic from repair, if you're into
    software you might find microcontrollers (PICs are the most common for
    hobby projects, do a search) fun to play with. Tiny computers for $5
    each (flash ROM, RAM, I/O ports...). That's what I usually play with
    when Lego Mindstorms becomes boring, it's nice to write assembly and
    know *exactly* what's going on sometimes, instead of using some highly
    abstracted API. All this proper electronics crap everyone talks about
    is just a way of making the bits your software pumps out spin the
    motor or light the light :)

  5. Guest


    I inherited my grandfather's old record player... looks about 70s or
    60s (age).

    It seems to run perfectly, other than the fact that no sound comes out
    of the RCA-type output.

    When i opened the unit, i noticed that one of the wires leading to the
    output RCA jacks seems to be disintegrating. Any thoughts on the best
    way to repair this?

    -perhaps i should test the integrity of the wires? i've seen this
    done, but don't know what tool to use;
    -and replacing wires in this fashion?

    ....i am VERY good with computers, but absolutely clueless with
    electronics (wiress, soldering, etc)...but willing to learn!

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