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  1. Chas Grant

    SOLVED Faulty Blue Breaker

    No problem!
  2. Chas Grant

    SOLVED Faulty Blue Breaker

    On the power Jack there is an unwired lug, this is for the red wire. Your input looks like it’s stereo, connect the black wire to the sleeve tab, you may not have any thing on this lug either. Now when you have battery in, if you plug it into power supply the battery is disconnected, when not...
  3. Chas Grant

    Pauper pooper

    T2 connects to one side of R16 and T3 connects to the other side. When Fully CCW T1 to T3 should be about 50K. When fully CW T1 to T3 should 100K. Check it that way.
  4. Chas Grant

    Design Challenge #1

    Golly Gee Wally, that is pretty nifty! :ROFLMAO: Actually its really cool. Pulling something out of your head and getting it onto breadboard and working is a good feeling! I bet you can tweak some values to get it sounding real good.
  5. Chas Grant

    Pedal recommendations for today?

    What No OD1? Geez :ROFLMAO: (One of my favorite overdrives BTW)
  6. Chas Grant

    Aft Preamp

    The EQD bows, which this is based on, uses an OC 139 NPN Ge transistor. Very hard to come by and probably a bit pricy. Many will substitute a different NPN Ge transistor with similar gain characteristics of the OC 139. The OC 139 is a glass pack transistor with the leads in a straight line and...
  7. Chas Grant

    Cracklejack is silent

    Clip the legs of the components so they are not as long. Post a picture of the component side please. You will need to remove the board for that, with the board out of the box, see if it works. Also when its out of the box, clean the board with alcohol and a toothbrush to remove the flux...
  8. Chas Grant

    Pauper pooper

    Most likely no damage occurred if you broke the pots legs fist. I have done similar thing and broke out the big snips to cut the legs, then remove them. Its the easiest way with a pot. If you damaged the pad/hole you would know it, no sound would come out. This is a much better angle. The pots...
  9. Chas Grant

    Pauper pooper

    Also verify C2 is a 100pF cap, looks a little big but it could be a higher voltage than I am used to seeing, which is no issue as long as its 100pF. And if you could, take another picture of the volume and drive pot from the front side. From the one picture pin one and three of the volume pot...
  10. Chas Grant

    Pauper pooper

    Quick idiosyncrasy check, the treble trimmer is part of a passive tone stack, are they set the same ? Passive tone stacks are volume droppers in general and removing treble will sound like a lower volume. Also ensure the dip switches inside pedal are set the same. Both of these can affect volume.
  11. Chas Grant

    Pauper pooper

    Good, the op amp is biased correctly and seems to be working properly, power is good also. Let me look at the schematic and see where to go next.
  12. Chas Grant

    SOLVED Faulty Blue Breaker

    Good Deal, didn’t you say you had a Rodent issue? That happens to be a favorite of mine. You got the OP07, or did you track down a LM308N?
  13. Chas Grant

    SOLVED Faulty Blue Breaker

    You most likely have a partial ground somewhere. Either at bottom of board where wires are or on the foot-switch. The question here is, does the dim light bother you or can you live with it. Or to look at it another way, do you want to risk messing up a working pedal for a led??
  14. Chas Grant

    Pauper pooper

    First voltages to take are the power supply voltage. At the cathode of D5 you should have about +9V. At the junction of R12 and R13 you should have around +4.5V. If these are good, take voltages on all legs of op amp referenced to ground. Once you have these post them in the thread.
  15. Chas Grant

    X

    Sharp looking pedal. It is a great sounding pedal, I love it!
  16. Chas Grant

    SOLVED Faulty Blue Breaker

    If they are clogged, drilling will possibly damage them. Tack those on, CAREFULLY if you have to.
  17. Chas Grant

    SOLVED Faulty Blue Breaker

    Whoa, that might work
  18. Chas Grant

    SOLVED Faulty Blue Breaker

    Looks like there is still wire in the two jack ground holes. That will prevent the solder sucker from working. It helps if you have the helping hands, place the board so its vertical, place solder sucker at hole on one side, then place iron tip on other side of board. Its hard to get a good pull...
  19. Chas Grant

    SOLVED Faulty Blue Breaker

    Get a Weller WP series iron, variable speed fan control pot, a plastic 2 gang electrical box, an outlet, 3 conductor plug from an old computer, and a switch plate cover wit outlet and switch hole, and PRESTO you have a variable temperature soldering iron for $60, and Weller WP irons are pretty...
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