I've been trying to fix two Super Famicom consoles that seems to have the same problem. After replacing D1 in both of them I measure 9v up until the power switch when the switch is set to off. When I put the switch to on the voltage drop to between 3-4v. Here's what I've tried to far to debug this issue: - Remove 7805 = measured 9v at the input solder pad. - Solder 7805 input and GND leg only = measured 3-4v at the input leg. - Solder only 7805 input leg = measured 9v at the input leg - Solder 7805 input and output leg = measured 3-4v at the input leg. I've also replaced a bunch of capacitors without any luck. When I'm diode testing with a multimeter from GND to the components L1 and c11 I'm getting a beep in both ends each component, is that normal or does that indicate a short? This mother board haven't been modded in any way. Please help me before I'm throwing this out of the window!