nate_noise
New member
Hello Rock n Rollers,
Just finished building the Thumb Sucker Compressor and it doesn't turn on, no signal is coming through whether the effect is bypassed or engaged. I tried beginning to check continuity through the signal path with a digital multimeter (I'm a newb in this realm). Once I got to D3 and D4 (diffused red LEDs) in the signal path my DMM stopped beeping for continuity and instead the LED's light up (I can alternate which one lights up depending on if I swap the negative and positive probe of my DMM, the effect is not plugged in, LEDs must be pulling some power from the DMM probes).
Is that normal or is something weird going on here?
Also I detected continuity from the input jack to output jack when the effect is bypassed, so why might no signal be going through to the amp?
Should be noted I changed a few cap values for bass guitar. (C3=10n, C5=2.2u, C6=2.2u, I also used a 2N5087 at Q1.
I'm also using jacks I haven't used in a lot of other builds, ACJS-MV-3 and ACJM-MV-2 as per this datasheet
See attached pics.
Thank you in advance
Just finished building the Thumb Sucker Compressor and it doesn't turn on, no signal is coming through whether the effect is bypassed or engaged. I tried beginning to check continuity through the signal path with a digital multimeter (I'm a newb in this realm). Once I got to D3 and D4 (diffused red LEDs) in the signal path my DMM stopped beeping for continuity and instead the LED's light up (I can alternate which one lights up depending on if I swap the negative and positive probe of my DMM, the effect is not plugged in, LEDs must be pulling some power from the DMM probes).
Is that normal or is something weird going on here?
Also I detected continuity from the input jack to output jack when the effect is bypassed, so why might no signal be going through to the amp?
Should be noted I changed a few cap values for bass guitar. (C3=10n, C5=2.2u, C6=2.2u, I also used a 2N5087 at Q1.
I'm also using jacks I haven't used in a lot of other builds, ACJS-MV-3 and ACJM-MV-2 as per this datasheet
See attached pics.
Thank you in advance
