Question about Technics SL-1200MK2 Turntable

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Power failure my 1210 has a power fault. the pop up light has popped up and shorted out causing a total power failure. i have checked the fuses and the fuse in the plug but still no life. the power supply is working(humms) so i guess its a component on the board somewhere but i dont know where or what one. any help would be really helpfull as i cant mix on one deck! thanks in advance, darren

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  • darren
    darren Oct 01, 2007

    problem solved! it was transistor Q2 part number 2sd637.

  • darren
    darren Oct 28, 2007

    hi sneezing7

    i did a google search for a 1210 service manual, traced the circuit from the pop up light to the power supply input and did a simple voltage test on the way at each component.

    when i got to transistor Q2 the power went in to the collector but didnt come out of the emmiter.

    i did a continuity test across the collector and emitter and the turntable strobe lit up.

    i got a replacement transistor from the uk for £0.80.

    i hope this helps you out.


  • darren
    darren Nov 11, 2007

    hi again

    its likely your fault is inside the pop up light housing or a faulty bulb.

    if your not to bothered about the light just unplug it(as you look at the circuit board its the plug furthermost from you) or replace the bulb or buy a new housing complete with bulb from ebay for about £6.00.

    my fault came from over use i think,the wires just got worn out due to the pop up light coming up too far!

    i hope this helps.




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Hi Darren,

Out of curiosity, how did you find out it was this part at fault?

My deck has just had the same thing happen to it :(. Unfortunately turntables are not popular in Cyprus, so it looks like I have to diy it.

Posted on Oct 28, 2007

  • sneezing7 Nov 11, 2007


    Thanks for that. Ended up having the same problem!

    After replacing the 2 transistors, I still keep blowing them every time I turn on the pop up light. Obviously there is a short somewhere. Did this happen to you as well? Any hints where I can look for the short?



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