tremolo noise

[peterg]

http://tagboardeffects.blogspot.ca/2013/04/earthquaker-devices-hummingbird.html?m=1
I built the earthquaker devices hummingbird tremolo using tagboard's vero layout a while ago. When it's on there is a background hum and when it's off the tremolo can be heard.
Is there any general things to look for to fix these issues? Bad layout or bad off board wiring?

[nocentelli]

Some slight ticking is almost inevitable, "noise" on the other hand is not. I have not built that particulat layout, instead I did my own layout for a Hummingbird/Moosapotamus Skippy hybrid (i.e. The JFET input fom the Hummingbird with Moosapotamus' 2N6027 variant tremelo section). Mine is noise and tick-free in bypass, but when engaged, the ticking can be faintly heard when not playing.

For the noise, I would suggest checking all grounds are connected as per the schem, and also check your switch wiring is good.

For the ticking, after reading RG's posts in this thread:

http://www.diystompboxes.com/smfforum/index.php?topic=103700.0

...I made sure my layout had a separate connection to ground for the LFO cap to discharge so it didn't discharge directly into the ground used by ther audio section. For the IvIark layout, I would suggest removing the Sw2 connection from the common ground used by the audio section (i.e the bottom strip) and try connecting it separately to the input ground.

[peterg]

Thanks Leo. I'll try your suggestion of removing the switch ground connection from the shared ground.