Re: Mac A1181 820-2290 A NO POWER HELP!!!!

If you don't have green light or orange light on your charger then you need to check schematics for one wire circuit which is responsible for it.

As mentioned by @piernov please report with voltage readings of PPBUS_G3H and PP3V42_G3H. The readings you should expect are the following:

PPBUS_G3H: 13V
PP3V42_G3H: 3.42V

If you PP3V42_G3H is present but PPBUS_G3H is not present then diode mode PPBUS_G3H to check if you have a partial short.

If the diode mode readings are very low then...