iMac mid 2011 27" Flashing #1 LED new power supply. Will not turn on
I bought this 2.7 GHz i5 27” iMac from OfferUp and the seller said it was diagnosed as a bad power supply.
I replaced the power supply and now I just get a flashing #1 LED. It will not turn on.
As soon as I press the power button the LED goes out. I release the power button and it begins flashing again. I don’t know the history of it. It does not have water damage as far as I can tell and the fans and heatsinks are clean.
I changed the NVRAM battery, tried to reset the SMC, pulled the RAM, checked all the connections and still it’s a no go.
Does anyone have a suggestion what the problem is. I have been racking my brain for 3 days over it.
Thanks
Brian
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