Re: My electra worried me
Nope, its the battery. Spyder's batteries are 9.6v, not 9v. It doesn't sound like a big difference, but it is enough. Many, many people have had a problem with their marker after switching to a 9v. Go back to the 9.6v and you should be okay.
The other possibility is that when you changed the battery you knocked the wire lose for the eyes. Check and make sure the wire for your eyes is connected correctly.