Got a DS lite that won't respond when the powered on. No lights, nothing. Charges fine (orange light comes on). Fuses 1 & 2 are bridged. Replaced the power switch. Checked continunity between the points on the switch and the point on the board.. everythings fine.. Cant work it out. Must be a faulty mainboard I know but if there is a component worth replacing I might do it. Any ideas?