desperate- ready to toss my tubescreamer.

Discussion in 'Effects, Pedals, Strings & Things' started by Chris Scott, Sep 2, 2008.

  1. Chris Scott

    Chris Scott Silver Supporting Member

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    And all because I cannot find the info that shows you how to bypass the switching circuit in order to convert it to normal DPDT switching.

    I've looked everywhere.

    It's a TS-5, but it's the same as the TS-8/9 etc

    I re-boxed it, hence the need for a regular switch type.

    It's a GREAT old pedal, but unless somebody can show me where the diagram that Keen keeps refering to that "bypasses the jfet's", I'm just gonna throw the poor thing away, because I CANNOT FIGURE OUT HOW TO TURN IT ON AND OFF......


    Help????!!!!!!!
     
  2. FrankieSixxxgun

    FrankieSixxxgun Member

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    True bypass on the TS-9 is a pain in the ass and considered to be unnecessary, which is why you're having trouble finding diagrams. Analogman says:

     
  3. Chris Scott

    Chris Scott Silver Supporting Member

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    Thanks Frankie,

    Saw that a while ago.

    You are right about the lack of info being relative to the lack of a real need for the mod in the first place. My deal is rather different in that I started with a plastic-boxed TS-5, and decided (rather lamely) to rebox it.

    What a f--kin' nightmare!

    Thanks anyway dude!
     
  4. chrisr0712

    chrisr0712 Member

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    You can put it in a Truebypass looper (small single loop) for easy on/off
     
  5. FrankieSixxxgun

    FrankieSixxxgun Member

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    Here's an idea, can you replace your DPDT switch with a momentary type? That should still work the FET switcher deal, right?
     
  6. Chris Scott

    Chris Scott Silver Supporting Member

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    Should, but doesn't.

    ...something about the WAY it momentarily contacts seems to be critical. The first avenue I went down was wiring one of those in, as I at least knew that the switching medium had to be, by definition, momentary.

    Works about 60% of the time- certainly not good enough.

    Thanks for the idea nonetheless!
     
  7. Chris Scott

    Chris Scott Silver Supporting Member

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    I certainly could, but call me stubborn- I want this silly thing to work like a regular pedal. Even non- true bypass would be a GODSEND at this point....


    Thanks anywho!
     
  8. FrankieSixxxgun

    FrankieSixxxgun Member

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    Still got the original switch? Glue a metal cap on that and jam it in the new case.
     
  9. Chris Scott

    Chris Scott Silver Supporting Member

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    Yet another good idea, but there has to be a positive stop integrated in there somehow, as the original-style switch is BEYOND tiny. It was one of my first "...well, I could...." but I blew it off 'cuz I thought it wouldn't come down to that.

    I might just do something along these lines though Frankie, as it seems like the closest thing yet...
     
  10. ccrrbb

    ccrrbb Member

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    Hey Chris,

    Craig Boone here. I've misplaced your email address. (Well, my computer has, but that's a long story.)

    Please write me back.

    Thanks.

    ccrrbb@mindspring.com
     
  11. spentron

    spentron Member

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    Ibanez relies on a tact switch, which "pops" bewteen positions to make a solid sudden connection. The momentary Alpha switches should work (from mouser) although having twice the actuation force and resulting noise than a 3PDT is ridiculous.

    The off/on circuit can be strapped to be always on (TR2 E-C short), but even better would be to get rid of the FETs ... there are 2 and have a diode in series with one leg. You need to short the non-diode terminals on the one coming from volume, and remove the other one.
     

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