Problem with my Gamegear

My GameGear got a strange problem.

Sometimes it works and sometimes not.

When it not work, I power ON and the GG power OFF in just a fraction of second (the LED just do a little Flash).

Then I keep it powered OFF for some days and it works.

Anyone have this problem too?

Any help is appreciated.

Thanks in advance.
Yeah, I had the same problem with my game gear, even one of my nomads. After lots of usage the power button does wear out. It may not be the batteries, it just may be old.