Gameboy advance - repair

hi,
after a sucess on the ZX48K repair, i now have a Gameboy advance (not SP) that don't show any sign of life.
I read that it could be the fuses (F1 or F2). i think i can bridge them to test.
Anyone had a GBA with no power/sound/image/anything ?:unsure:
the AA Batteries are ok. The PCB has that white kind of plastic glued so is hard to follow the tracks :mad:
I am thinking on bridge the fuses, but if the problem is other i can put more power to the pcb and blow other part..:blink:
Any suggestions?