Original post by: Stephane Robert ,
Did you check into the Logic board if you had some Capacitors that are bursted? "Top Bombed" normally is flat. Inspect for all capacitors on the logic board (both sides of the logic board). See the comparaison: [LEFT] Busted Capacitor; [RIGHT] New Capacitor. http://www.instructables.com/files/deriv/F0A/LNSH/H1QMLGIS/F0ALNSHH1QMLGIS.LARGE.jpg Sometimes, it's not the power supply the issue. When some capacitors in the logic board is broken it gives that king of symptômes.