iMac 143W power adapter not available from Apple via phone support or online

Yes, this has been a longstanding problem. I guess Apple figures that unlike a laptop charger, a desktop wall wart does not get abused and therefore not need replacing.

We of course are just users and can only sympathize, if you want Apple to hear your voice, send feedback:

Product Feedback - Apple

Folks, I also have a failed 143w power supply - I think! But this is why I’m not certain:

I measure 3v at the output plug. It could be that it is awaiting a signal from a working iMac to tell it to ramp up to full output voltage of 15.8V. Or, it could be toasted, and that’s all you get once it’s failed.

I found a replacement unit on eBay, but it is clearly “used”, and this unit also has 3v at the output. This has shaken my confidence slightly.

Could the unit be fine, and the iMac has failed?

Can somebody else please measure the output on THEIR failed power supply? Ideally a person who has bought a NEW power supply, and has proved their iMac is still fine. Then measure the old PSU output, and see what you get. Please!!

i was also suffred from this case ,i seriosly required imac 143w power adupter,i have already complained reqarding this item since last few days and still may case id 102218225288 is open now.how can i arrange this please guide.

My iMac 24" 2021 M1 will not turn on. There is no local Apple Store where I live. The local computer shop did not have a similar power adapter so I went to a national retailer that has a store here and sells Apple products. They had the 143W power adapter in use on a display model. They kindly disconnected it and tested my iMac. Success! It turned on! Unfortunately, they did not have any adapters for sale and didn't offer to order one for me. Went online @ Apple.com - no luck. So I called Apple Support - after being shuffled between sales and technical support, I talked to a specialist. He would not sell me a replacement - apparently these 143W adapters are not available through Apple ( I assume they would get you a replacement if you brought in your machine to the Apple Store) but not able to obtain through Apple by phone or online. What's up with that? Not too happy with my support call either...the technician offered to sell me a cable without a power adapter insisting it would work for mine --- weird. Fortunately, he also suggested I look in the aftermarket for a replacement - and there they are --- in abundance all over the internet just not available through Apple. Disappointed official Apple replacement is unobtainable for the average non-warranty owner.

same problem i presist as Keith Barkley

i am completely disappointed with this product