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Blew someting in my synth

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  • 19-01-2014 7:28pm
    #1
    seannash
    Registered Users Posts: 5,672 ✭✭✭


    So I unpacked my jp8000 from its case today to have a little mess around with it.
    Plugged it in but forgot to plug in the step dwn converter(Bought in the US)

    Lights came on,started making a buzzing sound for 5 seconds and then lights went off.

    Any Idea what I've done/ blown etc
    Also where is the best place to get it fixed


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    #2
    Neurojazz
    Registered Users Posts: 1,759 ✭✭✭Neurojazz


    seannash wrote: »
    So I unpacked my jp8000 from its case today to have a little mess around with it.
    Plugged it in but forgot to plug in the step dwn converter(Bought in the US)

    Lights came on,started making a buzzing sound for 5 seconds and then lights went off.

    Any Idea what I've done/ blown etc
    Also where is the best place to get it fixed


    Check fuse in the wall plug first - hope it's only that! - If not, then 'electrofix' is the place to get it checked - or open it up and see if there's a fuse near the psu inlet.


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    #3
    TroutMask
    Moderators, Music Moderators Posts: 743 Mod ✭✭✭✭TroutMask


    ouch, pray it's a fuse! Sometimes there are 'overvoltage protectors'. If it's not fuses then you're probably looking at fried power supply-age.


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    #4
    seannash
    Registered Users Posts: 5,672 ✭✭✭seannash


    its not the wall plug anyway.
    I have it opened but I have no idea what to look for


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    #5
    TroutMask
    Moderators, Music Moderators Posts: 743 Mod ✭✭✭✭TroutMask


    Turns out there is no internal fuse:

    http://www.gearslutz.com/board/geekslutz-forum/482444-mains-fuse-jp-8000-a.html

    This explains all - including the info. that you didn't need an external 220 VAC to 110 VAC step down all along as the internal supply traffo has taps for every country. Doh!

    Now, back to your problem, if you're lucky, the thermal windings break switch on that internal mains traffo went open and saved the rest of your synth from overvoltage damage. If you're unlucky, it didn't open in time. I've had luck bypassing these - requires surgery though. Time to check that synth in to a tech.


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    #6
    jiltloop
    Registered Users Posts: 2,182 ✭✭✭jiltloop


    Try this guy, he's sorted me out in the past and was very reasonable. Highly recommend him.

    http://www.retroactivesynth.com/


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    #7
    peter05
    Registered Users Posts: 334 ✭✭peter05


    I have done this with many a time with logitek meters. If you need help PM me I actually have a few traffos here handy that might suit for replaacement.


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