I had lying around an expired RSA SecurID with the typical blank display only showing a small 3 in the right.
Looking for some info about expired tokens I found an old topic at flickr (original URL here) where Travis Goodspeed managed to revive one the tokens with a simple trick: apply 3v for a second in two of the pads behind the protective plate.
Here is the diagram:
Here the revived Token:
The token was expired since november 2011 but still got battery to keep working.
I Haven’t tested if token still is valid to autenticate against RSA daemon after revival.