Video from the VGA port? Take a look at the battery - chances are that it's leaked badly and possibly destroyed Amber circuitry...
If you have the case(s) open just cut those batteries out because my A3000 was in storage for only 6 years and it had started to leak. I thought mine was ok but some of the ground track had started to lift off the board!!!, now replaced with a Ni-MH from Maplins.
