Home › Forums › Vintage EHX › Octave multiplexer 1975

Viewing 7 posts - 1 through 7 (of 7 total)
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  • February 7, 2015 at 2:22 pm #83826
    Dynamo_74
    Member

    Bought a really nice vintage octave multiplexer. Fully functional until resently. Now it’s stone dead, been resoildering the battery connections and the only progress is that it now clicks when pushing on/off and bass button on the rear. Help? Does anybody know any “common” faults on this pedal??

    February 11, 2015 at 8:53 am #120528
    beatnik
    Participant

    make sure you have soldered the battery clip in the right direction or you risk to damage the circuit.

    black side goes to input jack ring

    then measure the voltage on the ICs and report

    February 11, 2015 at 9:00 am #120530
    Dynamo_74
    Member

    Thanks! I will check and measure! I’ll be back…

    February 12, 2015 at 5:00 pm #120538
    Dynamo_74
    Member

    Hi again! I’ve checked the minus cable from the battery and it goes correctly to the ring of the input jack. I also measured all the Ic and get a value of 8,36V on each…???

    February 12, 2015 at 9:22 pm #120539
    beatnik
    Participant

    do you have sound in bypass mode ?

    February 12, 2015 at 9:38 pm #120540
    Dynamo_74
    Member

    No! That’s the strange thing…I just have small scratch sounds from moving the knobs or click when pushing the footswitch…

    February 12, 2015 at 10:13 pm #120543
    beatnik
    Participant

    very likely you have a faulty footswitch. check its operation with multimeter. check also input and output jacks

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