Need help figuering out what my transistors are up to (ESV FUZZ)

Started by Skitarg, November 22, 2009, 10:18:30 AM

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Skitarg

Somethings up with my transistors. I accidently broke my transistors I first got with the kit so I ordered new ones and out them in yeasterday and my fuzz face sounded awesome! Then I screwed on the bottom so I could move it around and try it with my better amp but then only the bypass was working so I figuerd that the bottom was pressing the transistors out of place or something I opend it and pressed them firmly into place and tried it without the bottom and it stated to work again but same thing happend again when I screwed on the bottom and now it wont even work without the bottom no matter how much I push them into the sockets and stuff lite that. Does anyone know what the problem could be? if there are bad transistors, or if there might be a bad solder joint somewhere? (but that would be kinda wierd cuz all the trouble before seems to be with the transistors)

petemoore

  Not sure what an ESV is.
  Learning a learning process as outlined in Debugging sticky thread will be the fastest way we can figure it out though.
  Making the 'city' [actual circuit], exactly like the 'map' [schematic circuit] is the basic idea, once there it has to work.
  A transistors B/E diode can be tested with DMM "--->l--" for diode setting, or if you have Hfe test socket in the DMM, just use that.
  If it's NPN-silicon, a booster circuits transistor socket can serve as a transistor test/comparator position, plug and play/compare to known working transistor and circuit.
Various test jigs exist for Jfets etc., NPN booster is fun, useful in various ways such as hearing what the 2n5088 sounds like compared to a 2n2222 or BCxxx.
Convention creates following, following creates convention.

Skitarg

Okey I´ll just have to wait for my firend to bring his test kit over here then. just got the pedal to work agin by pushing some on the transistors but it stopped again after I put the bottom closure on (so it still seems that the problem is about the transistors). ESV Fuzz = Extra Special Vintage Fuzz (From BYOC)