Chasm Reverb problem

Started by stringsthings, February 08, 2015, 10:18:39 PM

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stringsthings

used the pdf to etch the board.

The reverb works fine and the controls all do what they're supposed to do.  But I have 2 problems:

1.  Pops when switching.  Either way.

2.  I still get some reverb signal leaking thru when in bypass.

Any thoughts?

link to build thread with pdf files
http://www.diystompboxes.com/smfforum/index.php?topic=105109.0

schematic:

stringsthings

fixed !  :D

The mosfet 2N7000 (Q3) was bad.  I may have damaged it when I soldered it in. Of course this was the transistor
that I didn't use a socket on.

It was causing the Vb voltage from the 56k resistor (R4) to go under 1 volt.

Pulled the old 2N7000 and put in a socket and a new 2N7000.  Works like a charm!

The reverb sounds great now and has silent switching.  Bypass mode works also works as it should.

deadastronaut

Cool. I had the same problem with one build

swapped a fet...sorted...silent switching etc...nice one man  8)
https://www.youtube.com/user/100roberthenry
https://deadastronaut.wixsite.com/effects

chasm reverb/tremshifter/faze filter/abductor II delay/timestream reverb/dreamtime delay/skinwalker hi gain dist/black triangle OD/ nano drums/space patrol fuzz//