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philfournier

macrumors newbie
Original poster
Mar 3, 2021
27
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Today I noticed my Mac mini m1 was completely shut off. I’ve never turned it off since I bought it, it’s always on, in sleep mode, and yeah I’ve had issues waking it up like everyone else, unplugging and plugging back in the USB-C cable. Today, I tried to turn it back on, nothing. Unplugged it, waited 30 seconds, tried holding the power button. Nothing. It randomly gave me the start up sound and the front light indicating it was on after a bunch of plugging back in, but then it shuts right down again. Doesn’t even show up on my monitor. Monitor just says there’s no source.



i noticed the back was subtly wet. The black part where all the ports are. I went to wipe it, and more liquid appeared. Whenever I rub it with my fingers more and more appears. I removed the black plastic from the bottom and there’s evidence of some form of liquid inside. It has NEVER been spilt on, so save me that. No drink has ever been near this thing. What is going on??????
 

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biffuz

macrumors 6502
Feb 23, 2016
347
349
There isn't anything in a computer with liquid in it, unless it has a liquid cooling system, which the mini doesn't have. Except electrolytic capacitors, but that's brown, or some kind of batteries, but it's not that much.
You sure you don't have a leak?
 

uller6

macrumors 65816
May 14, 2010
1,072
1,778
The Mac mini M1 motherboard doesn't have any electrolytic capacitors that could leak. But, the power supply does have some large electrolytic filter caps, and it's possible one of these leaked. That's still a lot more liquid than I would expect from a leaking capacitor though. Bizarre.

I know you said it's never been spilt on, but....do you have a pet that's mad at you for some reason?
 

pmiles

macrumors 6502a
Dec 12, 2013
812
678
Well look on the bright side... you know why the computer won't turn on... moisture on the electronics.

You may not have spilt something on it, but someone/something else may have.

It would take a rather severe humidity change for condensation buildup. You either live in the tropics, have turned your bedroom into a greenhouse, or set up your computer in the bathroom.
 

philfournier

macrumors newbie
Original poster
Mar 3, 2021
27
12
No I’m not kidding. No one has spilt anything on it. It’s winter here. I’m in New Brunswick Canada, the room is warm just from baseboard heaters. Sometimes I use an electric heater but I haven’t used it in a little while now. It’s sitting on a grovemade desk stand and pretty close to the wall. Is it possible the fan is blowing out, hitting the wall and redirecting into the computer causing moisture?
 

philfournier

macrumors newbie
Original poster
Mar 3, 2021
27
12
The Mac mini M1 motherboard doesn't have any electrolytic capacitors that could leak. But, the power supply does have some large electrolytic filter caps, and it's possible one of these leaked. That's still a lot more liquid than I would expect from a leaking capacitor though. Bizarre.

I know you said it's never been spilt on, but....do you have a pet that's mad at you for some reason?
I’m 100% positive nothing has been spilt on it by anyone or anything.
 

philfournier

macrumors newbie
Original poster
Mar 3, 2021
27
12
Well look on the bright side... you know why the computer won't turn on... moisture on the electronics.

You may not have spilt something on it, but someone/something else may have.

It would take a rather severe humidity change for condensation buildup. You either live in the tropics, have turned your bedroom into a greenhouse, or set up your computer in the bathroom.
I live in New Brunswick Canada, it’s been cold out for the past week or so and warm inside heated by baseboard heaters. That’s pretty much it. I have it sitting on a wood desk stand and it is up against the wall maybe like 6” or less from the wall. You think the fan is blowing air and bouncing off the wall back into it to create condensation?
 

philfournier

macrumors newbie
Original poster
Mar 3, 2021
27
12
you know the way the pics look to me that could be it! what the weather like in your part on the world?
New Brunswick, Canada. Cold and snowy. Regular winter though. Condensation makes sense if it’s sitting on a wood desk stand on my desk but the desk is against the wall and the back of the Mac mini is about 6” or less separated from the wall. Could the air blowing out bounce back in over time to create condensation? The fan is pretty much non existent on these
 

LeeW

macrumors 601
Feb 5, 2017
4,342
9,445
Over here
If nothing has been spilt on or near it then it can only be condensation, there is nothing inside the mac that could leak. Well, apart from a capacitor but not that much and if it was a capacitor your device would have bigger issues.
 

philfournier

macrumors newbie
Original poster
Mar 3, 2021
27
12
If nothing has been spilt on or near it then it can only be condensation, there is nothing inside the mac that could leak. Well, apart from a capacitor but not that much and if it was a capacitor your device would have bigger issues.
And it won’t power up. Sometimes it will for a few seconds, but not enough time to get the monitor to recognize it and see what screen it gets to before shutting down again. Then I have to unplug/plug back in multiple times/wait a while, and I eventually get the start up sound, then shut down again.
 

LeeW

macrumors 601
Feb 5, 2017
4,342
9,445
Over here
And it won’t power up. Sometimes it will for a few seconds, but not enough time to get the monitor to recognize it and see what screen it gets to before shutting down again. Then I have to unplug/plug back in multiple times/wait a while, and I eventually get the start up sound, then shut down again.

That could be caused by condensation inside. If it is wet under the cover it is probably wet inside. Too much for it be even a leaky capacitor and it is too spread out to be from something like that, at worst it would be a very small drop that would be on the inside, not all over the outside of the bottom cover. That definitely looks like condensation, got the right look and pattern.

I would get it open and have a closer look inside, condensation bridging across element can be the cause of your power up issues.
 

Juicy Box

macrumors 604
Sep 23, 2014
7,580
8,920
I’m in New Brunswick Canada
Do you use a humidifier?

If the inside of your home is warm and humid (obviously from a humidifier) and you brought in a very cold piece of aluminum (the Mac Mini) from outside your home, the moisture in the air could condensate all over the outside and inside surface of it.
 
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philfournier

macrumors newbie
Original poster
Mar 3, 2021
27
12
That could be caused by condensation inside. If it is wet under the cover it is probably wet inside. Too much for it be even a leaky capacitor and it is too spread out to be from something like that, at worst it would be a very small drop that would be on the inside, not all over the outside of the bottom cover. That definitely looks like condensation, got the right look and pattern.

I would get it open and have a closer look inside, condensation bridging across element can be the cause of your power up issues.
Thanks so much! I booked an appointment with a local apple approved store to have a tech look at it. I left it u plugged for a while and just actually powered it up to the log in screen and was able to enter my password and get in for the first time since the shut down. the monitor recognized it. Moments later, it shut back down again.
 

philfournier

macrumors newbie
Original poster
Mar 3, 2021
27
12
Do you use a humidifier?

If the inside of your home is warm and humid (obviously from a humidifier) and you brought in a very cold piece of aluminum (the Mac Mini) from outside your home, the moisture in the air could condensate all over the outside and inside surface of it.
Check the recent comments. I actually don’t have a humidifier. I purchased the Mac mini in December and it’s been inside here ever since and hasn’t moved an inch. Barely even been touched by human hands. It’s pristine
 

philfournier

macrumors newbie
Original poster
Mar 3, 2021
27
12
Once I actually get it to power on, it does for a moment and then shuts off again and doesn’t matter how many unplugs and back in I do, I have to wait a while and it’ll boot up again and then shut right back down. Sucks
 

biffuz

macrumors 6502
Feb 23, 2016
347
349
If you rule out all external liquid, all you're left with is a very unfortunate case of condensation. It may have damaged your mini just for being plugged in. Be ready for bad news from the store.
Hope you have some kind of insurance...
 

Coheebuzz

macrumors 6502a
Oct 10, 2005
511
148
Nicosia, Cyprus
Stop powering it up for starters as the water can cause unwanted bridging, send the wrong voltage to some component and kill it, store it in a dry place until it gets looked at.
 
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