iMac G3 Blue Won't Turn ON

I have an old iMac G3 blue that I just pulled out of my closet. The problem is that it won't turn on. When pushing the power button it lights up green for less than 1 second and you hear what sounds like the crt turning on than off. When the keyboard is plugged in and you push the power buwer button on the Mac the caps lock key also lights up for a second. I have 512 mbs of memory in the 2 slots. While pushing the power button a green light on the board next to the memory also lights up for a second. It has a new purple battery with the model number being TL-2150. There's a sticker that says 400MHz | 512k | L2/64MB | 10GB | DVD | 56K | BB. Also it's family number is M5521. It's EMC # is 1821. The DHHS code is GX. I also do have an Apple USB Keyboard Orange which I bought about 2 years ago it is not the orignal though. I also do not have the Puck Mouse.