Home Forums Help/Technical Questions Help with micro synthesizer

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  • #79122
    Gurdjieff
    Member

    I purchased an EHX Micro Synthesizer for guitar on ebay. It’s the unit that has a 24V power supply and the switch on the right. I’ve had it for several weeks and experienced no issues. Suddenly, today, I plug it in and the power LED fades out. It appears dead and has no functionality. Beyond ordering a new PSU (from Musicians Friend) what can I do to troubleshoot the pedal?

    #102249
    The EH Man
    Moderator

    I’d open it up and check the power switch. Sounds like it may be coming apart from an external hit.

    #102255
    Gurdjieff
    Member

    Thanks for the fast response. I’ll check the switch tomorrow.

    #102275
    Gurdjieff
    Member

    I opened the case and checked the switch. I don’t see anything loose or disconnected. What do I need to do to verify it’s not the power supply?

    #102379
    Gurdjieff
    Member

    Ron-I found a photo of the inside of the Bass Micro Synthesizer. Comparing this pic to the inside of my Guitar Micro Synth, the wires are connected similar to my synth. Can I use this picture to help me check for loose connections? I’m sorry for the lame question. I’m new to this sort of thing (but eager to learn).

    #102433
    Gurdjieff
    Member

    I received the replacement power supply. Issue solved. My problem was a bad P/S. Everything works.

    #103622
    bassdown
    Participant

    Dear Reader,

    I bought my EXH Bass Microsynth pedal new about 6 years ago and completely love it. Right out of the gates, one of the solder connections to my input jack snapped because the input housing kept coming unscrewed, and everything would shift/spin… snapped the solder. It seemed pretty clear what had happened, so I re-soldered it, glued the housing in place… worked great again… have since gigged with the pedal a ton over the last 6 years. However, the power just recently stopped working… light won’t go on, no sound, etc… so I thought the adapter might’ve died. However, I just got another power source, and my BMS still isn’t working. So… I opened the pedal, and here’s my question: there are two purple wires soldered to the inside of the power switch; one is soldered to 2 opposing poles on the switch… looks like it goes through one, runs to the other, and is soldered to both. However, the second purple wire is only soldered to one side… soldered to the hole it runs through, but the end is dangling in between the two poles… in the center of the switch. Is this likely the problem? It would appear both purple wires ought to be soldered to their two respective poles on both sides of the switches inside plate, correct? If not, does anyone have any other suggestions/ideas as to what this could be or how I would check it out? Do these power switches or power inputs ever just die and need to be replaced?

    Thank you for your assistance… I would love to just quickly solder this other connection and throw this killer pedal back on the gig asap!! I just want to double check before soldering anything.

    Thanks!!

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