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Trying to buy PSU for my iMac 27" 2020 desktop, but found several model numbers on the market, so, just want to buy the right one, should PA-1311 2A2 good? Any thoughts?
Thanks,
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The iFixit parts listing shows this as the needed unit for this system
So as you can see that is the correct unit for your system.
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@Dan - Thanks Dan. By the way, a question though, after replacing the GPU, what's the proper way to get power connected in order to avoid short or burnt on GPU board?
Thanks,
@lovecd - Are we taking about the 2020 27” 5K iMac? There is no GPU board in the newer systems. The last series to have a MXM GPU board was the 2011 systems.
Review this guide iMac Intel 27インチ Retina 5K Display 2020 ロジックボードの交換
Sorry Dan, I was referring to PSU board, not GPU. I heard some stories that the PSU board is shortened if not connecting power cord correctly. Any suggestions?
@lovecd - There was a bad run of PSU’s which had the neutral and ground lines mis-wired! I would recommend you work on an insulated bench and use an isolation transformer it you are doing this for a living.
After you put things together enough to test things I would take a Volt meter testing the chassis ground to the outlets neutral and ground points. You should not see voltage on either (hot side for sure).
Other than that I haven’t encountered any issues!
@danj — thanks Dan!
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