Chosen Solution

Hi, the Q4260 (NDS9407) has burned. I changed it, but it burned again. So, I identified a short on the circuit connected to the drain of Q4260. I don’t find the other bad component, because I need the eletrical diagram to do this. Do you have the esquematic diagram of mainboard? Thanks

Fabiano, this is where it gets a bit complicated. I do have two schematics that go with the A1297, but are different by year. I posted the images of the motherboard from both and identified the location of the Mosfet. I also attached the part pertaining to the Mosfet. Hope this helps, good luck.

A1297 Mid 2009

A1297 Mid 2009 Mosfet location

A1297 Mid 2010

A1297 Mid 2010 Mosfet location