27” 2012 iMac not power up - dead
After years of use, the device made an electronic noise while I was sat at the desk and immediately went off. Device will not power up now.
I’ve tried different power sources, holding in the power on, removing the RAM and replacing in various combinations.
It seems to be a power related problem but I’m not expert, welcome advice including ultimately where I can take for repair (Live in Lincoln, UK).