Mac was dead, replaced power supply and #1 led comes on when power is applied, but goes off immediately. No voltages are measured on the power supply output, but 120VAC is present on the input to the board.
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Contact your vendor - seem's like the power supply is still faulty. If you've experience and tools you could test it.
If testing shows the power supply is not the problem, you most likely have logic board problems.
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