Need to test power supply from this iMac before buy a part
I got a problem with my iMac 21.5 retina 4k display model A1418 EMC 2833 the computer doesn't come on at all and I need to find a copy of the Apple technician guide iMac 2015 that way I can run a test for a power supply before buying a replacement part, so please someone can give me the PDF of this manual or someone tell me the volts for each pin on this power supply I appreciate so much thanks.
Update (04/30/2018)
Imac 21.5 4K 2015 this is what the led 1 make with the new power supply
Esta é uma boa pergunta?