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  1. Replies
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    So the gain is tied to the ground loop?

    So the gain is tied to the ground loop?
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    This is odd. An isolated supply should eliminate...

    This is odd.
    An isolated supply should eliminate loops.

    What amp? And does the amp hum when no guitar is plugged into the pedal?
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    Which model Voodoo?

    Which model Voodoo?
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    First you need to insure the amp is grounded...

    First you need to insure the amp is grounded properly at the outlet.
    You also need to insure the outlet does not have it's feed wires reversed.
    If the ground loop or hum is still present you need...
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    How do you like Gimp?

    How do you like Gimp?
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    Yeah but you are smart enough to go get a PCB...

    Yeah but you are smart enough to go get a PCB when it is far less expensive.
    Looks good to me, I did almost the same thing with a Big Muff Pi board.

    I'll post the construction process in my blog...
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    Nice! what circuit did you use?

    Nice! what circuit did you use?
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    Soon you will have extras of everything, and you...

    Soon you will have extras of everything, and you can just pull what you need out of a drawer...
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    You're no fun anymore.

    You're no fun anymore.
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    So we can only watch? We don't get to play?

    So we can only watch?
    We don't get to play?
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    Good Lord, not another one...?

    Good Lord, not another one...?
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    Sure would! Give it a shot! (not with a...

    Sure would! Give it a shot!
    (not with a shotgun...)
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    By golly, if it works, it works!

    By golly, if it works, it works!
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    F1=3A F2=500mA Both are slo-blo

    F1=3A
    F2=500mA

    Both are slo-blo
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    What size fuse are you using? Should be a 500ma I...

    What size fuse are you using? Should be a 500ma I believe.
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    You measure negative bias voltage at pin 5....

    You measure negative bias voltage at pin 5.
    Then, after you have tubes in, you measure bias current on pin 8.

    How many times...
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    Yeah that looks right. The stuff right after...

    Yeah that looks right.
    The stuff right after that, like R45 & R46, R19, R5 & R6 can you verify that?
    And the stuff after V2 like R7, R20 and R22?

    It's like there isn't enough signal going thru...
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    From the input all the way thru V1. I wish you...

    From the input all the way thru V1.

    I wish you could inject a signal at various points in the circuit...
    To me it looks like the amp is OK all the way thru the power section.
    You have bias...
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    V4 is the PI. I think there might be a problem...

    V4 is the PI.

    I think there might be a problem near the input section?
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    Pins 1&8 are where you measure mV. That is your...

    Pins 1&8 are where you measure mV.
    That is your bias CURRENT (here mV=mA)

    Pin 5 is where you measure -DCV bias VOLTAGE.
    Should be between -20 and -75 DCV
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    Is pin 8 mv as well?

    Is pin 8 mv as well?
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    Either he is busy playing, or has given up for...

    Either he is busy playing, or has given up for the nite
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    I knew as well. Practice makes perfect!

    I knew as well.
    Practice makes perfect!
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    Also need A thru F

    Also need A thru F
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    I use Google Drive for my file storage, it is...

    I use Google Drive for my file storage, it is great and it is free.
    I forget the total free space I can use, I think it is 25Gb or so.

    I think the better option for my photos is gonna be Amazon...
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