Build Your Own Clone Message Board

Bypass works and LED lights up. When the pedal is on it squeals when the Level is down or oscillates when the Level is any seeing other than down. The Repeat control affects nothing. The Delay control affects oscillation rate. Before the oscillation takes over it does pass signal.

I triple checked the components layout. I'm stumped.

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Check these 2 things:

1 - review the wiring on the repeats and level pots. Make sure none of the pot contacts are shorted to one another or any exposed wire lead is shorting to another connection. If a connection on the repeats pot is touching another connection, it can make it so the repeats pot is on full all the time, which causes oscillation.

2 - if you can measure voltages, check DC voltage at pin 1 of the PT2399. It should be 5 volts. The chip will do all sorts of weird things like squeal and oscillate if the voltage sags a few tenths below 5 volts.

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MasterDelayer/Reverbrador/Ampaholic/TopJacker

I re-tightened my pots and checked for shorts. Pin 1 reads 5.07vdc. Issue remains.

Sent from my SM-G935T using Tapatalk

Disconnect the repeats pot from the pcb. This will tell us if it’s the chip or the pot.

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MasterDelayer/Reverbrador/Ampaholic/TopJacker

If the oscillation stops after you disconnect the pot, carefully replace the wiring on the pot and try again.

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MasterDelayer/Reverbrador/Ampaholic/TopJacker