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  • in reply to: Black Russian Big Muff no sound when activated #186212
    Minor_Issue
    Participant

    Realized I was measuring wrong. Getting some normal readings now. LED still not turning on. Voltage readings now in line with 9v at one end of LED and 0 at the other

    in reply to: Black Russian Big Muff no sound when activated #186211
    Minor_Issue
    Participant

    Ok, I’m back, sorry real life got in the way of guitar pedals (very sad).

    So I did some rewiring, there were some loose connections. Good news and bad news: good news is I’m getting 9v almost everywhere, now. Bad news is that I also seem to be getting 9v now through the ground section. I’m 9v on either side of the LED. 9 volts anywhere on the hot loop and the ground loop. Pedal is obviously not turning on.

    Is there some way I accidentally wired it to itself or something funky going on?

    Much appreciate you, sirs.

    in reply to: Black Russian Big Muff no sound when activated #186189
    Minor_Issue
    Participant

    9.3V definitely passing through the circuit along the yellow line of the circuit in the diagram. LED shut off now even when circuit on, after reading 1.65 for a while.

    in reply to: Black Russian Big Muff no sound when activated #186187
    Minor_Issue
    Participant

    Thank you this is extremely helpful. I am poking around with the multimeter trying to figure out the problem. Good news, our LED is back on. I plugged the pedal in again and while I’m no longer getting any bypass signal, with the effect on I’m getting some distorted sounds, something between ring mod and octave fuzz.

    I was able to ascertain that the pots do seem to be functioning correctly. I can turn them up or down for volume, sustain, and tone and they all work even in the warped distorted state. I also noticed if I stick my finger on the output jack the signal comes through much clearer. Still no sound when the circuit is off.

    I’m set to DC on my multimeter but I’m not getting your 9v reading at the LED even though now it’s on. Maybe I’m just dumb. EDIT: I’m getting 1.6V and 0 at the LED

    Still poking away at it!

    in reply to: Black Russian Big Muff no sound when activated #186180
    Minor_Issue
    Participant

    Ok, solid point. I have a multi meter. What do I set it to again exactly and where should I connect it on the LED?

    I did try a fresh 9V and no change. Do I connect the battery in when I use the meter or take it out?

    in reply to: Black Russian Big Muff no sound when activated #186175
    Minor_Issue
    Participant

    I didn’t touch the LED or the switch when I wired it. Only things I soldered were the two pots (S, T). As far as I know the circuit is correct but I could obviously be wrong. For clarification I did copy off the stock unit, then I checked against the schematic.

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Viewing 6 posts - 1 through 6 (of 6 total)