Author Topic: EHX Guitar MicroSynth Switch Repair  (Read 417 times)

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NicolasZourb

EHX Guitar MicroSynth Switch Repair
« on: February 09, 2017, 03:51:11 AM »
Ok guys. I'm new here and a noob in self repairing and modding.
So my Microsynth just stopped working. When I engaged the pedal the light came on, but no signal whatsoever,while the bypass worked just fine.
I went to a repair shop,the man there told me its an unfixable dsp circuit so RIP.
Anyway I didnt give up and I tried a lot of things,so I figured it was the 9pin switch so I opened it,messed around with it, managed to make some effect sound come out of it!

But I cant figure out the switch,couldnt find a schematic of it and I think the guy that tried to fix it lost a component.
Any thoughts? Maybe a photo of a properly working switch setup?

Thank you

Govmnt_Lacky

Re: EHX Guitar MicroSynth Switch Repair
« Reply #1 on: February 09, 2017, 08:45:22 AM »
The fact that you were able to get the effect to function (even if just for a moment) tells me that you might have a bad connection or short somewhere.

Post up a few good pictures of the circuit so we can get a look at what we are dealing with and we can go from there.

Instructions for posting pics can be found here:

http://www.diystompboxes.com/smfforum/index.php?topic=113366.0
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Re: EHX Guitar MicroSynth Switch Repair
« Reply #2 on: February 09, 2017, 01:50:19 PM »
I went to a repair shop,the man there told me its an unfixable dsp circuit so RIP.

Except that it's not, it's all analog and very traceable (mostly jellybean parts). Maybe they got confused with another pedal?

Bring it to them again. If they still insist it's DSP, show them this:
http://www.experimentalistsanonymous.com/diy/Schematics/Guitar%20Synth%20and%20Misc%20Signal%20Shapers/Electro%20Harmonix%20Micro%20Synthesizer.pdf
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