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  1. soothsayer86

    2N5485 Son of Ben

    This is the method I use, makes it super easy. Also, using blue tack to hold the board in place while soldering is extremely helpful and makes the process much less frustrating.
  2. soothsayer86

    Special Overdrive transistor question/mistake

    No worries, just wanted to make sure someone who comes along and reads this later has accurate info!
  3. soothsayer86

    Special Overdrive transistor question/mistake

    So, reading through the comments on Guitar FX Layouts (https://tagboardeffects.blogspot.com/2014/03/shins-music-dumbloid-standard.html#comment-form), it seems like the issue I am describing is just standard for this design...sigh. So I am gonna try out some different op amps and see if I can...
  4. soothsayer86

    Special Overdrive transistor question/mistake

    I get audio through the pedal totally fine, the issue is that it just sounds terrible :oops:?
  5. soothsayer86

    Special Overdrive transistor question/mistake

    Thanks Chuck, I'll check this when I get home from work. As to the blue LED, I tried various colors and the blue one just happened to be in there when I took the photos.
  6. soothsayer86

    Special Overdrive transistor question/mistake

    Without a jumper the circuit doesn't function. The LED footswitch with the 3pdt breakout board keeps the CLR in the circuit so those pads need to be jumpered.
  7. soothsayer86

    Special Overdrive transistor question/mistake

    Here are the rest of the pictures:
  8. soothsayer86

    Special Overdrive transistor question/mistake

    Your description sounds exactly like im experiencing, but I was told that in this circuit the transistors aren't what is creating the overdrive. Honestly, I don't know enough about it to know for sure. Hopefully I can get this figured out!
  9. soothsayer86

    Special Overdrive transistor question/mistake

    Yeah I will go pull it apart and get a picture of the bottom, however because more than one pedal is doing the exact same thing, it's unlikely to be a solder bridge or cold solder joint on the exact same component. But hey, you never know!
  10. soothsayer86

    Special Overdrive transistor question/mistake

    p.s. the LED spot is jumpered because I used a LED foot switch instead.
  11. soothsayer86

    Special Overdrive transistor question/mistake

    heres a shot of the top side of the board for the first pedal. I just went through and confirmed all of the components one by one. Everything checked out. I am completely stumped. I would appreciate any help on this.
  12. soothsayer86

    Special Overdrive transistor question/mistake

    Ill post some pictures later on. Thanks for being willing to help out.
  13. soothsayer86

    Special Overdrive transistor question/mistake

    Thanks for the info, I have taken a break from those two pedals for a little while, when I go back to them I will triple check all the components and make sure everything is correct.
  14. soothsayer86

    Special Overdrive transistor question/mistake

    So I guess that means the overdrive is coming from the opamp? Which means I must have used the wrong components somewhere and it is affecting the voltages to the IC. Damn.
  15. soothsayer86

    Special Overdrive transistor question/mistake

    That's so weird, because I ordered the parts based on the build doc, but then looking at the image of the silk screen on the listing for the pcb it says bc548c, here: https://www.pedalpcb.com/product/specialod/ Also in the build doc it calls for 100 and 220 resistors and I assumed those would...
  16. soothsayer86

    Special Overdrive transistor question/mistake

    Thank you! Just went back to look at the datasheet again, and I don't know how I missed that table with the hfe values. Thanks for pointing that out.
  17. soothsayer86

    Special Overdrive transistor question/mistake

    Anyone know if there is a difference between the BC548C and the ones mouser has that have different letters at the end like bc548CTA?
  18. soothsayer86

    Special Overdrive transistor question/mistake

    I built a couple Special Overdrives and both are having the same issue. The overdrive itself is extremely sputtery and fizzy sounding and not smooth at all. I have realized I got BC548B versions of the transistors and the circuit calls for BC548C transistors... ugh. I am wondering if this...
  19. soothsayer86

    LED Stomp Switch Question

    That's what I figured, thanks for confirming!
  20. soothsayer86

    Good source for 1/4" control knobs with set screws

    I get most of my knobs from tayda: https://www.taydaelectronics.com/hardware/knobs.html Just make sure you read the descriptions because some are set screw and some are not.
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