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'powering an effect with AC'
Author:stringbend (registered user: 1242 posts )
Date: Mon, Feb 13th, 2017 @ 10:16 ( . )

Crap.
I was fixing an old Gibson Skylark amp and liking the outcome.
So I grabbed a couple of pedals and power supplies to add to the fun.
I didn't notice one power supply was 9VAC.
It didn't take long for it to fry the effect running off it.
(A Caline brand Green Cactus - which is a Fulldrive 2 clone)

I've yet to open it up. Any tips on how to debug something like this?
Any and all help is appreciated.

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'powering an effect with AC'
Author:stringbend (registered user: 1242 posts )
Date: Mon, Feb 13th, 2017 @ 10:30 ( . )

I've seen this (it doesn't sound promising)

[link]

I'll open it up and hope for an obvious fix, but probably won't find one.
At least it is an inexpensive pedal.

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'powering an effect with AC'
Author:Stephen Keller (registered user: 6256 posts )
Date: Mon, Feb 13th, 2017 @ 12:35 ( . )

On 02/13/2017 @ 10:30, stringbend wrote :
I've seen this (it doesn't sound promising)
:
: [link]
:
: I'll open it up and hope for an obvious fix, but probably won't find one.
: At least it is an inexpensive pedal.

I don't know the specific circuit, but some general principles apply. Alternating voltages will have likely destroyed any electrolytic caps in the circuit. The transistors might be okay, provide peak voltage (negative or positive) didn't exceed device tolerances. If there are ICs in the circuit, you'll have to examine their spec sheets to see what deleterious effects a.c. voltages and currents might have. The passives probably weathered through okay.

Stph

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