Two EA trems: one buzzy, one fine. What's going on?

[H5N1]

I have two EA Tremolo builds which for all appearances should be exactly the same, but the first one has a problem.  It is noisier, and the noise gets worse when you touch the switch or the outside of the box with your fingers.  I had to build the pedal with fiber isolation washers in order to keep the jacks from shorting out on the box, and when they were shorted, the box would short out completely.

The other EA Trem works just fine.  It needed no isolation washers on the jacks, and it's built the same way as the first one, with the same layout and mods.  They both have a switch which cancels the oscillation and allows use of the onboard EQ and volume control as a boost.  I'm puzzled.

[heisenberg]

Thats why im glad i use plastic cases.

EA tremolo gave me problems too. Did u biuld the one from rog, or ggg?? Or a different one. I built the rog one no problem. Then i wanted to build the kay trem but decided to just cram it in the ea box with a dpst switch to toggle between em. Put a trimmer so i could adjust volume for the ea trem and use the old hole for the one knob that the kay had. Somehow after i had got it all wired up, somethin went crazy on the input stage that used the bs170. The tremolo section was fine. I had probed it with a instrumet cable cut at the end and a .1 cap onthe tip wire. Ground it and then tap around with oscilator or music going through the pedal. So i had ti rebiuld it. I just cut the very cramped board with wire cutters and then wired the new stage up to the main board which now just had the trem section. It still did the same thing! So i ripped that out and built the input stage from the ggg site. Had to get creative stuffing it in there, upside down underneath the light, but it worked great again. And now i got two trems in one pedal for no reason!

But theres voodoo in this stuff. Sometimes gotta rebiuld. Or probe it with the thing. Or heck for wires touching.

[Transmogrifox]

Have you attached a ground to the box with fiber washers?  Usually the jack is the ground connection point for the box.  If you don't have a good ground connection to the box, I can almost guarantee that's your problem.  That's why one (which has a grounded box) is quiet and the other picks up buzz.