Sunking and ground in and out of the box.

BRGPollen · February 05, 2013, 05:18:11 PM

Ok, This makes me feel like the biggest noooob around. I finally got around to building the Sunking V3 that I had purchased. I included the clipping diode mod that gives you a tone of options. With all of the pots, mods and what not & anything else that I thought I could do to to thoroughly confuse myself, I pit it on my testing rig and viola! I had given birth to one of the mythical beasts here!

Feeling proud of myself, I designed the box, drilled it , painted it and installed my new Sunking. As I always do before I close up a box, I took it to the music room for a thorough break in. I plugged it in and ........ no sound.

So, I took it all out of the box and went back to the stage I knew it was working. After unsoldering the input and output jacks and DC to put it back on the test rig, I didn't have high hopes that it was going to work but ....... there was my awesome Sunking! So I thought I must have made a noob mistake wiring the jacks and DC. To defeat this I installed the Input and output jacks back on the pcb.

OMG GROUND HUMMMMMMMMMMM. All I have effectively done by doing this is remove the Input and Output jacks and 3PDt bypass switch of my testing rig. While testing in this format I made sure to try one or the other and both Sleeve connections tied to ground to see if I was just missing a ground point. Neither had any help.

Does anyone have any Ideas? Thanks again for all of the wonderful searchable advice here.

"B"

Bret608 · February 05, 2013, 05:36:19 PM

Were you getting signal in bypass? I boxed a working circuit this weekend, had signal in bypass, but got this loud pop and no signal when I stomped it, and no LED lighting either. Turns out I had the circuit board ground pad connected to the DC jack and nowhere else, and this was the problem. I ran a wire from the DC jack ground lug to a ground pad on the 3PDT wiring board I used, and the problem was solved.

BRGPollen · February 05, 2013, 05:44:08 PM

On my testing rig with a True bypass 3pdt in between .... Yes I was. PS I wired it up for the buffered bypass. When I installed the jacks all I have is an ungodly ground buzzzzz.

"B"