Mid 2010 Mini. No power. Done PMU reset several times. I removed the power supply and measured 11+ voltage from the first 4 pins of the connector to the logic board. I am hoping that the PS is defective and not the logic board. 1. Is this the correct voltage and should there be additional voltage from the other pins? 2. The on-board battery measure 2.6V. Could this low voltage cause my "no power" problem?