Sunn T Kit 3PDT issue

[Anonymous]

Hey guys!
So I’m pretty new to building pedals, the sunn t being my second ever and boy how I’m regretting this! I’m on my third try and I just can’t make this thing work… I’m using the 3PDT wiring board, but I don’t know if it’s wired correctly since there was no indication on what to do in regards to the 9v power supply socket. Do I wire it there and ignore the main board? Do I wire in the main board and ignore it there? Doing both like I did obviously doesn’t work hahaha! Anyways. Right now the pedal doesn’t turn on and my best guess is that it might have something to do with this, but if you see anything else wrong please, by all means, tell me!

Cheers!

[Billy]

Your yellow out wire is soldered to the ground pad on the main pcb Andre it should go to the pad with the small T for tip written next to it

I’d personally power and ground the main pcb from the DC jack and jumper it over to the 3PDT pcb

 

 

 

[Cybercow]

The red wire at the PCB’s “IN_BRT” needs to be moved over to the “T” pad as well.

[Anonymous]

Thanks a bunch! I followed your instructions and now the pedal works as intended… I think… see… I can’t seem to lower the bias of Q3 any lower than 5.7v… would that be a problem? It sounds fine to me but to be honest I don’t have anything to compare it to so I don’t know if it should sound different…

[Barry]

5.7v is fine

[Author]

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