Mar 14,2021
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  • i did and the circuit only has raw output sound, no effects despite replacing 3 PT2399 ICs, please help

    Engineer 2024-12-31 01:50:55Reply

    and my level, delay, tone, repeat knobs don't do anything

    Reply
  • Just built this project ... not working for me. No change in my signal at all when the effect is engaged. My question is: is there anything to note with the board that may be incorrect? For example backwards component orientation or any other reported issues? Has this project been successfully built by other users? Before I start tracing, de-soldering, and troubleshooting I figured I would ask if there has been any reported problems.

    Glory to Ukraine 2022-01-27 23:21:13Reply

    Yes, I assembled this project, it worked for me right away, it could be the pt2399 chip itself. On the forums they write that not every chip starts. Try soldering the sockets under the microcircuits and try ...

    Glory to Ukraine 2022-01-27 23:24:51Reply

    try to solder a 25kOm resistor between delay pins 1 and 2 - if it works, then it's a potentiometer...

    Engineer 2022-01-28 02:38:48Reply

    I have a bunch of PT2399s from Tayda ... ill try swapping the chip and report back.

    Chris Ray 2024-03-22 04:55:53Reply

    I can confirm this circuit works. I've built a few of them, actually.

    Reply
  • Having issues with the signal being boosted and distorted. What does the 47ohm resistor do in this circuit? It’s coming right off the power input to the pcb. And it’s dropping the 9v to 8.1v. I looked online at the schematics and there is no 47ohm resistor on those. Could you include a schematic that you used or created for your boards to help troubleshoot? Thanks

    Reply
  • Hi Implex, thanks for all your great PCBs. I’d love to be able to attach a momentary switch (along with the regular on/off footswitch) to this circuit for a wild oscillation type effect. Have any idea where I would attach the two leads from the momentary switch? Is it possible with this circuit? Thanks!

    Reply
  • Some mounting holes would be useful to secure the board in the case ...

    Glory to Ukraine 2021-08-07 18:22:02Reply

    The board in the case is held by potentiometers ...

    Reply
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