A while ago I posted regarding transistors etc for a Colorsound Power boost clone pedal I was working on. Well, after many months I've actually finished 2 of them... They are identical to an original right down to the size of the PCB.and the components used. There is one slight difference in so far as the first board was a direct print from an Eagle layout, the second board was a 121 trace of an original PCB, only slightly different from the eagle board.
This is the Eagle board
This is board 2, a 121 copy of an original Colorsound Power boost PCB, and also a photo of an original
The component side is like this.. mine is on the left, the genuine PCB is on the right. The pots on my board are mounted to the board like the original... Just from the other side. The reason for this is purely down to the thread length on the pots. The thread on my pots isn't long enough to go through the PCB, and then through the enclosure as well.
The schematic used was this one..... a simple circuit which is basically a pre-amp that boosts the volume and treble and bass.
The components on the first board were all brand new, where the components on the 2nd board were mostly NOS for a visual vintage vibe.
I have an issue on both boards that I'm trying to troubleshoot, and currently i have reached out to 2 DIY effect pedal forums with no real resolution. i'm hoping someone here may be able to point me in the right direction, i'll try to give as much information as possible.
I have a cycled ticking noise that increases in volume when you turn the volume up on the pedal. it's not affected by the guitar volume, and stays there even when you turn the guitar down. Check out this video.
The last video shows a slight earth problem that may or may not have anything to do with the noise. i thought i'd include it anyway.
I have taken voltage readings off my pedal, and compared them to the readings from a genuine pedal (I'll say at this stage that my pedal is exactly the same as the genuine pedal as regards component values)
Genuine Pedal voltages
Q1 C 6.43V B 3.92V E 3.54V
Q2 C 11.53V B 6.44V E 5.82V
Q3 C 10.19V B 2.77V E 2.23V
Q1 C 6.37V B 3.90V E 3.52V
Q2 C 11.36V B 6.37V E 5.74V
Q3 C 10.54V B 2.75V E 2.19V