modding woes

[Seven64]

ok, so i have modded plenty of boss pedals, but every once in a while they give me a headache.  tonight, its a mt-2 metal zone.  i am doing some pretty basic mods, upgrading capacitors and changing the clipping section.  when i put it back together, it has almost no output when engaged.  it works fine when in bypass, but my new led doesnt get super bright, and i have to crank my amp to 80% to hear ANYTHING when engaged.  i cant even tell how it sounds because it is so faint.

should i be looking in the switching section, power section, or somewhere else in the circuit?  it just weirds me out that it works fine in bypass.  i have tried with both a boss power supply and a new 9v battery with the same outcome.

[LucifersTrip]

should i be looking in the switching section, power section, or somewhere else in the circuit?

it's basically the same as with any other troubleshooting...check the voltages and/or use audio probe to pinpoint failure. but when you're modding, it's obvious, but scrutinise the the area you modded first.

it just weirds me out that it works fine in bypass. 

isn't that exactly what you'd expect if a circuit mod didn't work and no switching was altered?

[Seven64]

good point.  i just spent the last hour re-wiring the thing, as every time i try to move something a solder point breaks, and now its time for bed.  i double checked my polarities of e-caps last night, and they were all bad.  i switched them all, but could this have fried anything?