#1
i got this phase 90 off eBay recently, and when I got it in the mail it was adequately protected, but when i plugged in to play, as soon as i turned it on the signal died completely. the bypass was fine, i could hear nothing when i didnt play and anything i did play. as soon as i clicked it my signal went dead. another thing, the power supply doesnt fit any of my adapters, and i use a stock carbon copy, so i figured it wouldnt be a problem. The plug is too small for my adapter, and i cant get any sound out of it when it is on. some glass fell out of the pedal casing when i opened it up to inspect, but i have no idea what that could mean.

anybody have any suggestions?

the guy on ebay has really good ratings from about 1500 people...
#2
I've had close to the same problem with my Phase 90. In my limited knowledge, the switch in MXR pedals dies rather easily. Or at least I think that's what it is.

If you're good with electronics you could try soldering in a new switch. If not contact MXR's customer support and see what they can do for you. They're usually pretty helpful.

Also, you might head over to the GB&C forums, check out the "pedal building thread" and see if anyone there has more advice, I know they definitely have more experience.

I don't know about your power input, that's weird. I have both a CC and Phase 90 and the jacks are the same on both.

Lastly, welcome to UG.
Tele - EP Booster - DLS - Big Muff - Ekko 616 - Rocker 30/AC15