IPhone :: 4 Power Button, Front Camera Not Working?

my out of warranty iPhone 4 power button stopped functioning all of a sudden and it also no longer made that "click" when pressed. What did I do?I decided to open up the phone and tried to do this, (at 4:30 is what I did)[URL]It basically shows a guy who bonded a very very small washer to the bottom of the power button. I tried this and it didn't work, probably because my washer was a was too big, i filed it down a bit, still didn't work, so I just put it back together, i noticed a few things:After Reassembly, this happened: power button still does not work, and doesn't "click"iPhone camera app shutter does not open and the bottom right "camera/video" icons just flicker, I've concluded this is because of the front camera not working.the ear speaker for phone calls is now "crackly".I noticed my WiFi and network signal isn't as strong, maybe a bar less on WiFi and a bar or 2 less on network.

Temporary solutions:A walk around camera fix is that i installed "camera plus pro" and this allows me to take photos and video. If I switch to the front camera it freezes, again confirming the front camera is not working.What should I do next?So I obviously did something when i took my phone apart and put it back together. I did open it up again and confirmed that all the flex cables and connections were seated properly.I ordered these parts from eBay: Power ButtonPower Button Flex CableBack Camera Lens With Flex Ribbon Cable Feedback If anyone has any ideas, feedback, suffers from the same problem, please feel welcome to continue the discussion. I will be posting a reply after I receive my parts from eBay also.

Info:
iPhone 4, iOS 5.0.1