iMac 27"early a1312 EMC 2390 Replaced PS and still won't start.

New Power supply installed and it still won't even start to begin to turn on.

I don't have a hard drive in it, or the monitor back on, will that be a problem for it just to start to fire up, get a bong of life?

I've got to go with the idea that the new PS and the old one are working as both produce the same outputs. (I know, I know! Correlation and conclusion. Otherwise the dude on eBay screwed me.)

I've got the same power output input readings in the new power supply as the old one. 115 on the pigtail connector going into the PS, and on the 8th solder joint of the connector, back of the board facing you, 25.6 volts.

15 - 16
13 - 14
11 - 12
09 - 10
07 - 08 <- 25.6volts
05 - 06
03 - 04
01 - 02

Any suggestions? Anyone encountered this problem before?

SD

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