Re: iMac A1311 PSU 614-0444

The 5 capacitors are KZH 1500uf 16v. Should I start by replacing those 5. Is there any suggestions for a better brand of that style of capacitor? Or should I be looking somewhere else on the PSU?

Hello, I am hoping someone can point me in the right direction in fixing the power supply on my mid 2011 21.5" iMac (A1311). The onboard diagnostic LED lights 1 and 2 do not light up when plugged in and powered on. The iMac turns on but does not get passed a black screen. For the past year if turned off the computer would not boot up unless I unplugged the power cord for a few hours. This past week I was updating to 10.13 Sierra and it shut down and will not get passed a black screen now. I pulled the PSU, but everything seems to visually look clean. Attached are some pictures. I really don't...

Re: New Members - please post your introductions here

Hello, thanks for all the good information in all the threads on this site. I signed up because I am looking for some help fixing my imac.

-Jay