Thanks for the tips. I've checked for DC leak at input and output and nada.
I also removed the LED with no improvement.
I put the LED back because it's a deal breaker.... I know this sounds stupid but I've heard old engineer tales about certain color LED's being worse than others. No change after the first color swap so I abandoned that as a dumb idea.
I checked for DC leakage during switching it in/out and on the switch itself...
I went down this rabbit hole with it for an afternoon when I first did it and got in my head it had to be the switch......
I appreciate the response though. Because of the low parts count etc, if these were still available, I'd order another handful and just start again.
With 2 dollars worth of parts in it I would have just built them until I got one that ran quiet :-)
the pot is insulated from the circuit and the tranny is soldered direct.
again, thanks for helpin out the FNG
I also removed the LED with no improvement.
I put the LED back because it's a deal breaker.... I know this sounds stupid but I've heard old engineer tales about certain color LED's being worse than others. No change after the first color swap so I abandoned that as a dumb idea.
I checked for DC leakage during switching it in/out and on the switch itself...
I went down this rabbit hole with it for an afternoon when I first did it and got in my head it had to be the switch......
I appreciate the response though. Because of the low parts count etc, if these were still available, I'd order another handful and just start again.
With 2 dollars worth of parts in it I would have just built them until I got one that ran quiet :-)
the pot is insulated from the circuit and the tranny is soldered direct.
again, thanks for helpin out the FNG