I cleaned the battery contacts with a q-tip and rubbing alcohol. I tried the batteries again but the screen still doesn't come on. The beep sound still comes on when the battery makes contact though.
Also, the battery that was originally in the Tama was not corroded. So, I'm thinking the problem has to deal with the motherboard and the screen.

Just open up your EnTama carefully, open it to the front screen, then try re-aligning the screen and wiping the scren contacts with a Q-Tip and rubbing alcohol, see if it works, or the screws my be not too tight, so tighten them.
I'll try that when I get home from work later. Hopefully that will solve the problem.

Edit: Nope still not working. I really hope it's not faulty. Also the screen worked when I first pulled the tab so I don't think it's missing any parts. I just don't know what to do anymore.

Edit 2: I do have a used V4 I could sacrifice for parts to fix the Entama if I have to. Maybe the screen on that one will work on the Entama.
Edited by MagicMimitchi, 10 April 2012 - 06:53 PM.