The electricity drained by a device

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3
votes
1answer
1k views

Customize external HDD spindown timeout?

It's possible to enable spinning down of mechanical hard drives using the "Put hard disks to sleep when possible" option in Energy Saver, and it's possible to customize the timeout period with sudo ...
3
votes
1answer
762 views

Why do I have to reboot my iMac and Wacom Cintiq after sleep?

I have an iMac and a 24 inch Wacom Cintiq. When I put the iMac to sleep, it freezes and I have to restart both the iMac and the Wacom Cintiq. How can I get around this?
2
votes
0answers
88 views

Turn off keyboard lights after typing

I have my computer (MBP 2015) to turn the backlight on my keyboard off after I haven't used my computer for 10 seconds. Is there a way how to disable the keyboard backlight after x amount of seconds ...
2
votes
0answers
63 views

The power button turns MacBook off, but not back on

I have: replaced/soldered a new keyboard connector on the logic board as it had a missing pin, replaced the keyboard twice (the second and third keyboards work correctly), tried jump starting the ...
2
votes
0answers
100 views

Find out what adaptor power socket an unopened iPhone 5s has

I have an unboxed iPhone5s here, which I have received as a gift from a friend who also received it as a gift and did not want it. I might end up regifting it myself, so I would rather not open it. ...
2
votes
0answers
540 views

reverse magsafe adapter? (magsafe2 power to magsafe1 laptop)

I have some magsafe2 power cords. That's fine, but occasionally I need to loan power to an older laptop that has the magsafe1 port. I carry a magsafe2 adapter so I can steal power from them. But is ...
2
votes
0answers
1k views

Fluctuating voltage on Magsafe charger

I got two Apple Magsafe charges, one for which I needed to cut and rejoint the cables. The fix went well and now when I plug in the charger it works and charges my Macbook Pro. Though when I measured ...
2
votes
0answers
353 views

Pop-up notification (or notification center notification) for battery in OS X Mountain Lion

I don't have the battery/AC icon turned on because, for the most part, there's no reason for it to be there - I typically get cord-free 5 or so hours at a time, so it seems redundant. Still, ...
1
vote
0answers
12 views

How to drawn power from a lightning connector?

I'm working on an iPhone accessory that needs to grab power from a lightning connector. Something like the lightning-to-USB cable, but I'd like to do that on a DIY way :) The problem is that, ...
1
vote
0answers
163 views

MBP randomly waking from sleep/hibernation

I Have a Mid-2010 Macbook Pro. For many months I've been running a version of Yosemite without issues, but I just upgraded to 10.10.5 this week. I think I was running 10.10.3 before but I don't ...
1
vote
0answers
84 views

MagSafe 2 frequently broken

I've got a MacBook Pro (Retina, Mid 2012), once in a longer period of time my MagSafe 2 adapter simply fries. Just a minute ago I fried the third MagSafe 2 adapter in three years time. It occurs with ...
1
vote
0answers
335 views

Mac Pro 2008 Refuses to Boot

My Mac Pro 3, 1 began rebooting randomly one day and the next it wouldn't come back on. Pushing the power button results in a fan clicking in to life for half a second and then all power is lost. The ...
1
vote
0answers
92 views

MBP Powering Down When Idle

My mid-2012 MacBookPro (Model 9,2) has developed an issue with power in the past few weeks. When it is left awake for several hours, but is idle, it powers off. When I turn it back on and log in, it ...
1
vote
0answers
649 views

Dim LED on Magsafe, Macbook Pro won't boot

I have a Macbook Pro late 2008, and today, it suddenly decided to stop booting. The battery level is very low, and connecting the adapter to it shows a very dim green light on the Magsafe connector. ...
1
vote
0answers
3k views

iPad 4 not charging solution with usb 3.0 dual ports Y adapter

Just recently picked up an iPad 4. Saw that it specifies "not charging" when plugged into the usb port. Saw that it is a common issue due to usb power. I have usb 3.0 ports on my desktop so I tried ...
1
vote
0answers
341 views

How to identify the 3 thermals sensor connectors from the mac mini motherboard?

I opened my mac mini to switch the DVD with another hard drive and I forgot to take a picture with the ways the 3 thermal sensors are connected. THeir codes on the mainboard look like: J5550 - left ...
0
votes
0answers
14 views

iMac 5K able to fully restored after power loss

This afternoon, a thunderstorm cause my house's circuit breaker to cut off all the power of my house, my iMac was in sleep mode, I then unplug the power cord from power outlet of my iMac just for ...
0
votes
0answers
18 views

Faulty magsafe 2 diagnosis

I found a Magsafe 2 60W power adapter in the electronics trash and I would like to find out where it's fault is. I am pretty sure I can handle most of the common repairs on the chargers. I am asking, ...
0
votes
0answers
73 views

Turn off USB power on OS X/Mac Mini

I have a need to turn USB power off (and on) using a script or a piece of software. Ideally it should be possible to turn each port off/on separately, but also turning power off/on from all ports at ...
0
votes
0answers
26 views

iOS BLE Low Energy Power/Current consumption issue (in connected state)

Background – A BLE LE device acting as a peripheral is “connected” to an iOS9 app in the background acting in a central role. We have ability to measure the current consumed by the BLE LE device. ...
0
votes
0answers
22 views

Is there an alternative to hiding an application that will reduce the performance demand?

I'm just wondering if there is an alternative to hiding an application, that can reduce the performance demand of a program. I'm curious because I use blender from steam, but steam won't close unless ...
0
votes
0answers
19 views

How can I SMC Reset with this issue?

Okay so my friend gave me his old mid-2010 MacBook Pro. It has an aftermarket battery in it, the first one died and after his friend put the aftermarket one in it never started. I did the cycle where ...
0
votes
0answers
5 views

Is there a way to get live power usage

I'd like to monitor how much power is being used by my Mac. The tools I've found so far either list the maximum power (85W for my laptop charger) or the processor's usage (Intel's Power Gadget). I'd ...
0
votes
0answers
24 views

Macbook pro never goes to sleep

I got a brand new mid-2015 macbook pro 15", OSX 10.11.3. Display never turns off even it is configured to turn off after 10 mins in power adapter AND in battery mode. Screen saver (aerial) stays ...
0
votes
0answers
44 views

2011 Macbook Pro won't boot unless I SMC reset and do a combination of attaching battery and charger

From what I read, on this model of MacBook, an SMC reset is done by removing the battery and holding the power button down for 5 seconds with no charger or battery attached. I tried the other method ...
0
votes
0answers
101 views

iMac will not boot up with built-in LCD connected, but will boot without it

When I press the power button on my iMac (Early 2008 24" A1225 EMC2211 MB325LL/A) it begins to start up, but halfway through the start chime it loses all power and needs to be unplugged before the ...
0
votes
0answers
49 views

Power button, keyboard not functional after thermal place replacement (MacBook Pro 13, Late 2011)

After some searching on the internet, I have been struggling to reconnect the keyboard to the MacBook Pro after taking out the logic board to replace the aging thermal paste. I was following the ...
0
votes
0answers
92 views

Pinout and specs on 150W Cinema Display A1098 power supply?

I've inherited a 30" Apple Cinema Display. It's in great condition except for one thing: no power supply. I could pay $150+ for a used power supply on eBay, but -- with my past life as a ...
0
votes
0answers
19 views

13" mid 2007 Macbook, battery / power supply issue (white, A1181 model)

So, I have mistreated my macbook somewhat and would like to repair the damage. The problem is, there is "no battery supply", the icon at the top bar is a battery with a cross through it. There are ...
0
votes
0answers
60 views

Macbook Pro logic board getting no voltage

Laptop: MacBook Pro 13" Retina Display Late 2013 Logic Board: 820-3476 I have been doing testing on my logic board with the board removed from the computer and just plugging in the charger. I had an ...
0
votes
0answers
28 views

Can a 15" Retina MBP running 10.11 (El Capitan) determine if the attached power source is using a MagSafe adapter?

I have a first generation 15" Retina MBP. Recently there have been times when it runs out of power even though I'm plugged in. I have tracked it down to charging being intermittent if anything but a ...
0
votes
0answers
35 views

iPad 2, IOS 8.x, power issues, freezes when screen turns off

My iPad 2 64GB non 3G has stopped working and need help diagnosing what component is broken. When I would click the power button to turn the screen off or let it auto-lock after 2 or so minutes, I ...
0
votes
0answers
36 views

plug in charger when using OR charge it when low battery

I am working in an office for 8 hours a day. And I am using a macbook pro retina 2015 during that 8 hours for work. What habit should I be use to treat the battery better. There are two choices for ...
0
votes
0answers
42 views

Macbook 13" mid 2009 not charging nor starting

I disconnected the battery (A1331) on my Macbook 13" white polycarbonate unibody to install a second SSD in place of the unused DVD. I was also upgrading the RAM, that's why I decided to ignore the ...
0
votes
0answers
16 views

power status of MBP 13" (Early 2015)

I have the hibernate mode set to 25 but I think the laptop is not hibernating when I close the lid. In earlier versions of MBP there used to be a LED light available on the right-hand side of the ...
0
votes
0answers
29 views

What wattage of passthrough charging does the Lighting port enable for MFi devices?

I understand that with the "Made For iPhone" (MFi) program, you can do passthrough charging/powering. What wattage does this support?
0
votes
0answers
11 views

MacBook Pro wouldn't charge but Apple ASP say it does

I had an issue that my MacBook Pro wouldn't charge (the LED on the charger didn't light up either) so Apple directly sent me out a replacement charger which also wouldn't change it (also same as the ...
0
votes
0answers
105 views

Apple cinema display magsafe doesn't charge my MacBookPro

After last Yosemite update (10.10.5) I've seen something strange. I usually connect my macPro to my Apple thunderbolt display and the battery is charging correctly. I noticed a couple of time this: ...
0
votes
0answers
141 views

How to avoid external display going off after I unplug a MacBook from the AC Power?

When I have my MacBook Pro 10.10 connected to the AC Power my external display connected through HDMI works fine. As soon I disconnect the MacBook from the AC Power and start running on battery, my ...
0
votes
0answers
21 views

Problem loading iPhone on voltage converter (12 V <-> 230 V)

A few days ago I had a very strange problem. First, the iPhone 4S was attached to a car radio and it was loading an hour long, but the battery charge level only increased by one percent! It was hot ...
0
votes
0answers
127 views

can I splice power for a iPhone 5s into a lightning cable?

Algebra! yay! DJ + iPhone 5S + DJ Controller with 30-Pin (hardwired) + Apple 30-Pin to Lightning Adaper = A bumpin' party minus enough power to keep the controller running and connected to the phone ...
0
votes
0answers
242 views

MagSafe light turns out orange after few seconds

Is it normal for MagSafe to have orange light (not directly to be green light) 3-4 seconds after plugged to outlet ? I'm a bit nervous with this matter as I've just bought a new mbp after my ...
0
votes
0answers
75 views

Mac Air battery replaced, recognized, but not charging

So I attempted to replace my Mac Air battery myself. Swapped it out just fine, screwed things all back in place. Problems: It's recognizing the battery in the System Preferences>Power display, but ...
0
votes
0answers
68 views

MBP not charging despite SMC reset

Late 2008 Macbook pro4,1, "Battery not Charging", steady green led. Battery seems fine, and is after market but won't charge. It worked well a week ago before not being used over the long weekend. ...
0
votes
0answers
207 views

iMac shutting down when trying to install downloaded updates from Apple

My iMac keeps shutting down when I try to install the downloaded updates. It gets to "optimizing" level and shuts down.
0
votes
0answers
852 views

Battery indicator is stuck on one number

I have an iPhone 4s and the battery indicator is stuck on one number no matter how long I charge it. If I turn the phone off and then try to put it it on again it won't happen it will say the phone ...
0
votes
0answers
1k views

Plugged faulty USB into Mac Air, won't turn on

I have an external DVD drive with an AC power input. I plugged it into a power source and then into my Mac Air (the generation released a year ago). The computer shut down immediately. When I ...
0
votes
0answers
437 views

Macbook randomly shuts down without on charge (even at ~90% full)

I'm having a real issue with my Macbook (white, late 2009 version, running Lion OS X). It was about since 2 weeks ago or so, my Macbook would just randomly shut down, I lost a couple unsaved files ...
0
votes
0answers
660 views

Quickly dim the iPod Touch by hitting the power button twice on the lock screen?

I've always wondered if this was a feature or not. When I'm on my iPod Touch's lock screen, then I hit the power button twice, the first hit will sleep the device, the second will wake it again but ...
0
votes
0answers
399 views

How to put MacBook Pro to sleep when the lid is closed and you remove the power?

I think I have a common use case that is not properly handle by Lion. If I close the lid and remove the power supply, my macbook is not going to sleep mode and stays awake draining the battery. It's ...