Depattern
Member
I got impatient and ordered my Q3 for the Woodpecker (Hummingbird) Tremolo (2N6027 PUT) from Amazon (Vanxy Brand).
So the LEDs both powered on, but the green one which I wired to the 3rd leg of q3 is solid, doesn’t pulse, and there is zero audible amplitude modulation.
I believe a few users here have warned about generic Chinese transistors, so I soldered in a pin header (the right type - gold plated round hole) so I could swap them out if needed. But I tried almost all of them from the pack, at least 8 and none of them work
The level control works, but depth and speed do nothing. Is it possible that ALL of my Amazon transistors are bad? I’m hoping that the good quality replacements I ordered from both stompboxparts and pedalpcb will be the fix.
Is it possible that this is the likely issue? Just a bad batch/brand of transistor? Nothing else seems wrong. The power is fine, i/o jacks are good, the switch gets continuity on my meter. I didn’t go through with the probe yet, but I also don’t feel like pulling it out if I don’t have to
So the plan is to wait for the alternate 2N6027 PUTs to arrive and just slot one in and test that. I’m just wondering now if I should be looking at anything else as far as troubleshooting goes
*also, should my second, lfo-responsive green led work in theory? It does light when powered on, but it’s not pulsing yet either way due to the PUT issue
This is how I wired it, cathode to far right leg of Q3 & anode spliced into main led anode wire
