I had left my battery uncharged for close to a year, so I ordered a new battery and replaced it, and it worked. If you have the red light of death, first make sure that your battery is properly connected, then, let it charge overnight. If it still won't turn on or hold a charge, replace the battery.

Did you ever get your phone to work? I ordered a new screen and digitizer and then experienced this problem. I was considering ordering a new battery, but it sounds like you tried that and it didn't work. I probably shouldn't waste any more money trying to fix this phone. I really liked it, though. Bummer.