Well, another case of boot failure with only the first LED (501) lit.
Actually, I’ve already tried everything that’s been recommended here.
On pin 4, 11 and 12 I measure 11,93 / 11,94 V.
Could this slightly lower voltage be the reason for the Mac failing to boot?
Ist dies eine gute Frage?
Rep: 1 Tsd.
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The case for whether a voltage is good or bad is based in tolerance. Most power circuits have anywhere from 5 to 10% tolerance, but this can vary by spec. If the reading is within the +/- % tolerance, then the voltage is good.
von Isaac