Home › Forums › Vintage EHX › Help: I’ve fried my 18v electric mistress

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  • June 25, 2020 at 10:45 am #86325
    Pisquano
    Member

    Hello and thanks for the add!
    I own an old 18v electric mistress.
    I bought an EHX 18v power supply and an adaptor to have center positive tip as needed.

    As soon as I switched on the pedal no sound came out and, after a few seconds, smoke came out of it.

    On inspection it seems ok.
    I see dark marks near the switch but they could have been there before.
    Do you know what could have happened?
    The pedal worked fine with batteries but I’d never used a power supply.
    Now I’m scared about trying it with batteries again.

    Thanks

    Federico

    June 26, 2020 at 1:23 am #126208
    EHX STAFF
    Keymaster

    Please write info@ehx.co and see if we service that unit.
    If not ,post in the vintage section of the forum for help. Guys there can help you!

    June 28, 2020 at 6:55 pm #126226
    Scruffie
    Member

    Could you remove the circuit board and post a photo of the component side please?

    There was an early power regulation circuit which was later revised due to problems, you might need to send it to a tech to have that done for you.

    A correct polarity 18V supply shouldn’t have hurt it… are you sure the EHX supply wasn’t already centre positive and your adapter cable didn’t actually switch it to centre negative?

    Dark marks near the switch is probably just solder flux and nothing to worry about.

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