GGG Guvnor True Bypass problem

[Rethfing]

Hi. This is most weirdest thing I have ever seen. I just checked two 3PDT switches and the problem still remains. When I turn the effect on I can hear a huge drop in gain and volume. When I soldered the effect without bypass, in and out to jacks - it works fine, but the second I solder 3PDT it goes to hell. I tried schematics from GGG and Tonepad.

[Mike Burgundy]

Most likely is a wiring problem. Try and think + measure your way through this, instead of schematics. Which poles of the switch connect to which, press, which connect to which now, ignore the LED at first. After soldering, measure for conitnuity on bypass for in/out, and no connection to effect, and for continuity between input/effect in and output /effect out in the other switch setting. Make sure there's no conduction where it shouldn't be.
Also make very sure you're soldering correctly - hot enough to melt and flow quickly but not beyond that, and get in and out quick. Soldering at too low a temperature takes too long and will damage the switch internally (melt the case).

[Rethfing]

Well Mike, I already made few effects pedals and I never had any problem with bypass. My soldering is good, all my connections are nice and shiny so thats not the issue

[Mike Burgundy]

But it is working as expected when wired with just jacks, including enough volume?  Process of elimination leads to wiring/mechanicals, I'm afraid. I'm not saying you don't know what you're doing, it's just the most likely candidate by far - I don't see any way for the circuit to suddenly decide it doesn't like a particular sort of switch. If it works by itself, but not when a switch is added, then the fault in this case is somewhere in the added/changed business. That said, if all measurements check out (do they?), maybe it's a good idea to include schematics detailing what you've done and pictures. Don't trust good looking solder, by the way. Past results are in no way a guarantee for the future, and neither are looks. I'm diving into an amp (again) tomorrow that I thought I fixed on the very same basis - reflowed the lot, all solder looked good now, preliminary test was hum-free. After a week it's now buzzing like a beehive.

[Eric.nail]

I'd put money on a bad 3PDT. BUMP - for the soldering time. Many a switch i have ruined for taking too long to solder! lol Especially those Taiwanese ones you can get through Mammoth. They're pretty cheap. I'd definitely eat the extra buck or two for a higher quality switch.

[Rethfing]

Problem solved. LEDs 9V was connected from PCB - as suggested by GGG layout. I desoldered it and connected it straigh to power jack with resistor of course. It works great now (although Guvnor is lame distortion ). I guess the LED was drawing power preventing the effect to work properly.