The issue was the rollers. After thinking I realized that if it could eject a disc but not feed one it was only performing half of a function. Meaning a loose connection. The ribbon cable with the weird connection release apparently controls these functions and was a bit loose.
Apparently all this assembly got me was the LCD, digitizer and mic flex cable with adhesive. I was able to simply separate the LCD and digitizer without much effort, flip the mic cable and was all set.
Definitely not the LCD. I've tested two LCDs known to be good in this phone and theh are both dim when in the phone but perfect when in different phones. I don't currently have a multimeter on hand, if it is a power issue (confirmed not to be battery) any ideas what the issue could be? Does the fact that no change is seen wehm brightness is adjusted through settings indicate anything?
Are you referring to the power button or home button when you say "iPhone 4 button?" If power: Did you happen to notice if the small black "nub" in the image below was on the actual power button itself when you removed and replaced it? If not, this is the likely issue that is preventing you from hearing the "click" that we are all so used to. http://guide-images.ifixit.net/igi/UvFsCCaRbPCdPAOM.s... In regard to people not being able to hear you a lot of people disagree about what causes this issue but you may find it helpful to review the link below for a possible solution, diagnose and also a workaround utilizing the accessibility options. Microphone not working when making/receiving calls Update: Referencing the "nub" on the power button is from past experience. I actually just experienced, and resolved, this same issue. The other thing you need to make sure is that each wing of the power button is centered over it's pilot. In the image you'll notice the right side being lifted up has a hole. On the...
SOLVED The phone still wouldn't turn on/respond when connected via USB. I decided to inspect the dock port but before doing so performed one final troubleshooting step. I disconnected all cables with the exception of the touch panel, LCD and docking port. The phone powered on when connected via USB. Although I discovered corrosion which I cleaned on the docking port -but I found that when connecting the power cable while the phone was on made it non responsive. Although the capacitators did not seem damaged on the power cable it still did not function after cleaning. I'm confident that when I get around to replacing it the issue will be resolved. Made another attempt at salvaging power cable. After thorough cleaning with alcohol it functioned properly and this has resolved the issue.