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Model A1418 / Late 2013 / 2.7 & 2.9 GHz Core i5 or 3.1 GHz Core i7 Processor

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Symptoms for bad PSU?

Late 2013 21.5” iMac: I upgraded RAM and HDD to SSD all from iFixIt. Upon reassembly, LED #1 is solid and LED #2 blinks every 5 sec or so. No startup chime, and fan only “twiches” when the LED #2 blinks. How can I determine if I need to replace the PSU or if it’s a motherboard replacement I’m facing? Also - seems odd that the computer worked fine until I swapped out the memory. Any help much appreciated!

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Sounds like a PSU problem

Guide: iMac Intel 21.5" EMC 2638 Power Supply Replacement

Part: iMac Intel 21.5" (Late 2012-2019) Power Supply

iMac Intel 21.5" (Late 2012-2019) Power Supply Image

Product

iMac Intel 21.5" (Late 2012-2019) Power Supply

$129.99

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