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Repair guides, disassembly, and troubleshooting information for the third main redesign of Apple's popular Mac mini small form factor desktop PC, released October 2024. Features M4 and M4 Pro SoCs and a minimum of 16 GB of unified memory.

Mac Mini - no hdmi and blinking red

I usually switch my monitor between my Mac and PC. One night, my Mac mini’s screen wouldn’t turn on—I thought it was just asleep, but it wasn’t.

I thought the storage becomes faulty since I upgrade it but I tried using the original storage but I got the same result.

Here’s my situation: after plugging in the power, the Mac mini’s light keeps glowing on and off. When I press the power button, there’s no chime or response—just the same pulsing light. The dock station connected to my Mac mini isn’t turning on—there’s no light on my mouse.

Here’s the thing I have tried.

  1. I hold the power button to turn it off. Then I press it after again. I can hear the chime and there’s white light glowing for a while after a several mins the light will turn to blinking red.
  2. I have successfully “revive” the original storage but still the same result.

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  1. Also I just found out that the dock station slot I use to connect my Mac has a blinking light, which means it’s having trouble maintaining proper conductivity. The other slot works fine. Also only the mouse is connected to the dock station so believe I'm not overloading on it too.
Answer this question I have this problem too

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5 Comments:

To be clear the front normally White LED is now blinking Red?

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its white glowing for a while after a several mins the light will turn to blinking red

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@macuserzat172 - the system will need a DFU reset. Best to let Apple do this that's assuming the original NAND still fails the same which I think it will.

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Is that wherein you have option to restore or revive the mac? yeah I have succesfully revive the original NAND but still the same. I'm trying to restore both of the NAND but im having some issue.

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@macuserzat172 - time for that visit to the mount of Apple for there skilled workers to fix your system under warranty! But the clock is ticking, don't loose the window as if they are unwilling it will be costly!

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1 Answer

Your system should still be under warranty, I would get to an Apple Store or authorized reseller to get it looked at. This doesn't sound good!

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6 Comments:

wait I thought I already void my warranty after opening the unit since I upgrade my storage.

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@macuserzat172 - slide in the original Flash I won't tell 😁

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Apple nabízí bezplatnou opravu, ale jen pro určité s/n

Apple offers free repair, but only for certain s/n

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@vladimirneuman - Není to definováno sériovým číslem systému, ale stářím systému, dva roky od data zakoupení, a Apple vám v tomto ohledu také dá trochu prostoru pro manévrování!

It's not defined by the systems serial number it's the age of the system, two years from date of purchase, and Apple will give you a bit of wiggle room as well on that!

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Our seller provides a one-year warranty, so I was excluded from the repair.

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macuserzat172 will be eternally grateful.
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