Bohemia trouble

Pcustoms

New member
So something weird is happening, I have everything wired up up for the Bohemia, I get sound from the pedal when it's off, but I get no signal at all when I switched it on. I have the 4393 in there and the 2n222a in backwards like it asks. It's been bugging me for a while now. Any help would be appreciated!
 
Where did you get your 4393s? Did you test them before installation?

A picture of the solder side of the board may be helpful, some of your pot soldering on the top side looks pretty cold and blobby.

But perhaps most importantly, do a thorough inspection of your values as you have a 1M at R10. Should be 1K.
 
Where did you get your 4393s? Did you test them before installation?

A picture of the solder side of the board may be helpful, some of your pot soldering on the top side looks pretty cold and blobby.

But perhaps most importantly, do a thorough inspection of your values as you have a 1M at R10. Should be 1K.

I just saw that and hopefully that helps, I'm gonna go through and check all my values

I got my 4393 from digikey
 

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I swapped it and reflowed most if not all the joints. I'm still getting nothing when I engage. I still have to go through the other values. Also where the 2n2222a should be I have a pn2222
 

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If you have a PN2222A it should be opposite the print screen on the PCB!

If you have a 2N2222A it should be opposite the Print screen on the PCB!

If you have P2N2222A it should be matching the Screen Print on the PCB!

C2 - 47P looks like it has no Solder, I physically see a hole!
 
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