SOLVED Deadendfx switchblade

[drgonzo1969]

I finished wiring up this DEFX switchblade and its passing signal but it’s not sounding correct. Not enough gain and the whole thing just doesn’t seem to be behaving properly. I know it’s kind of a weird circuit but something is off for sure. I double checked component values and everything is good. The NPN is 2sc1815. The PNP is 2sca1015. I bought these transistors from tayda but they have a UTC prefix instead of 2sc. is this the problem? Here are some photos and build docs. I feel like its a transistor issue but not sure.

Switchblade build doc.pdf

drive.google.com

 

[Erik S]

Check the pin outs on the transistor data sheets. I’m not sure what’s what on your board, but there look to be three transistors installed in the same orientation, and I think the pin outs on the two you referenced are opposite of each other (ECB, BCE).

 

[drgonzo1969]

i think you nailed it. i cant fire up the iron and swap it out until the wife and kid go to sleep but i think that will fix it. thanks for taking a look and helping out.

 

[drgonzo1969]

Ok turns out they were all backwards. I looked up the datasheets on both the transistors and they have the same pinout. i just had them all backwards. but its up and running now and sounds pretty killer. definitly another weird one. its a clone Last Gasp Arts Super Oscillo 88. thanks again for helping me figure this one out.