Digitech PDS 20/20

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.
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Stevenrb718
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Post by Stevenrb718 »

I have a PDS 20/20 that is driving me crazy. The delay effect timing is right, but the effect on the note itself flanges up and down like a wave. It's like rocking a pitch shifter back and forth. I have replaced the bad caps, checked all the transistors, and swapped around several of the ICs with no change. The voltage regulator is also tested fine. I have no idea where to look next.
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trs
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Post by trs »

Are the Rate and Depth knobs turned all the way down?
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Stevenrb718
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Post by Stevenrb718 »

trs wrote: ↑12 Mar 2025, 16:54 Are the Rate and Depth knobs turned all the way down?
I fixed it since then. I don't recall what the issue ended up being.
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