Tone Vendor - completely silent

[skrattadu]

Hey guys, I just wired up a the Tone Vendor MKI and it's not working. I've built many pedals before so I know the basic checklist to go through... check for shorts, re-flow solder joints, check the switch, etc. This one just isn't working. I'm thinking maybe it's the transistors?
Also, I subbed a 22uf electrolytic for the 25uf since I don't have any 25s laying around, could that be it?
Bypass works, when I hit the switch, it's dead silent.
Any help would be appreciated!!

 

[music6000]

Swapped out the chip and it works perfectly! Thanks!!

Did you use the 7660SCPAZ ?

 

[skrattadu]

Yessir!

 

[yazooligan]

Hey guys, I just wired up a the Tone Vendor MKI and it's not working. I've built many pedals before so I know the basic checklist to go through... check for shorts, re-flow solder joints, check the switch, etc. This one just isn't working. I'm thinking maybe it's the transistors?
Also, I subbed a 22uf electrolytic for the 25uf since I don't have any 25s laying around, could that be it?
Bypass works, when I hit the switch, it's dead silent.
Any help would be appreciated!!
View attachment 10671

What transistors did you use for this, and do you have any more?

 

[skrattadu]

What transistors did you use for this, and do you have any more?

I used GT108G transistors and I do not have any more of them. I have also used MP40s for Tone Benders and I think they work great too!

 

[Dan0h]

It’s cool when things work out.

 

[yazooligan]

I used GT108G transistors and I do not have any more of them. I have also used MP40s for Tone Benders and I think they work great too!

Could I use three matched MP-40A’s?