2nd Hand Set up - Buzzing

Discussion in 'Hi-Fi Stereo Systems & Separates' started by Bacardiman, Sep 6, 2018.

  1. Bacardiman

    Bacardiman
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    Hi
    I recently purchased a 2nd hand table, Realistic and 2nd hand tuner/amp, Technics and paired them with new Wharfedale speakers.
    Tuner sound is perfect, but the turntable, has a buzz, which increases when the table commences and also increases as I turn it up.
    I assume i have been sold a dud of a turntable ?

    thanks

    craig
     
  2. dannnielll

    dannnielll
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    No... The turntable is not a dud..or at least no worse any other turntables. It has only two functions in life..to rotate a disk at a constant speed without grinding noises and to act as a platform for a tone arm..
    The buzz is almost certainly bad grounding technique. The signal coming from the cartridge is very small and prone to interference. There are 4 thin wires carrying the stereo signal . It needs to be within an earthed tube all the way up to the amplifier input. The first bit of this tube is the tonearm itself ,the second but is a screened cable. But there must be only one earthing point, preferably at the amplifer. If there are two earthing points, you will almost certainly get a hum loop. .. The electrical mains is producing a 50 Hz magnetic field inside thetroomhe it can induce a voltage in any closed loop.
     
  3. Ugg10

    Ugg10
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    As per @dannnielll, make sure you have the two RCA signal wires connected to the phono input on the amp and this is set to mm (or mc) as appropriate (but if you have sound at reasonable volume this is OK as it is, assuming it can be changed) and there should be another single wire from the turntable which connects to a point on the rear of the amp (ground post, usually a knurled screw). If there is no ground screw try putting the bare end of the turntable earth wire on one of the amp cabinet screws and see if that makes a difference.
     
  4. Bacardiman

    Bacardiman
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    Thanks all, embarassingly it was the earth wire. I can now hear the tunes wonderfully.
     
  5. dannnielll

    dannnielll
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    Thats not embarrassing... It's what these forums are for... But listening to ABBA now that's embarrassing!!!.
     
  6. Bacardiman

    Bacardiman
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    i agree, Forums are wonderful...

    Abba no, but its Status Quo... 3 chord rock...
     
  7. Apollo83

    Apollo83
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    OK. New forum rule.
    Before helping anyone, everyone must ask what music the requester intends to listen to...

    Status Quo = no help

    :)
     
  8. Bacardiman

    Bacardiman
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    hahaha - but i have to agree... i guess stating i saw them live over 80 times before Rick died would be unforgivable...
     
  9. jonno73

    jonno73
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    Even if the turntable is good to play ‘whatever you want’?...

    I’ll get me coat.
     
  10. Apollo83

    Apollo83
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    Jonno, I can tell someone's going to need to 'hold you back' before you get 'down down' and start 'rockin all over the world'...

    (Bacardiman it appears we have more than 1 member familiar with Status Quo here... rule rescinded. :) )
     
  11. Bacardiman

    Bacardiman
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    'Again and Again' over the years & Over 'Forty Five Hundred Times", I have been given 'Hard Time' for being a Quo fan. I am pleased i didnt 'Break The Rules' of the Forum.
    Excellent news i am not a 'Lonely Man' on this forum with an affection toward the 12 bar boogie shuffle of the Quo... On to the turntable goes "Frantic Fours Final Fling"... live in Dublin 2014...
     

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