JHS Soul Food Mod Help?

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.
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aarronhofeling
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Post by aarronhofeling »

I've got a toggle switch that seems to only work in middle position. in the sideways positions there is no clipping happening and furthermore the drive knob acts like a very drastic guitar tone knob but it works backwards (gets really bassy when the drive is turned up and trebely when dialed back) but that only happens in the positions that aren't working. everything works as its supposed to in middle position. wondering if this was a botched job heres a couple pictures of the guts. Anyone familliar with this circuit and mod? Anything stand out?
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Manfred
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Post by Manfred »

Maybe a silly question, did you check the switch for function with the ohmmeter?

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javimart1212
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Post by javimart1212 »

Yeah I would check to see if the switch is bad first.

Side questions:
What value of cap and pot did you use for the bass contour mod?
Did you wire the pot in parallel with c6?

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