Tagged Questions

2
votes
1answer
33 views

No power through USB for Roland A-49

I just plugged my Roland A-49 to my MacBook Pro (Early 2011 2.3 GHz). The MIDI keyboard would have its power supplied via USB, but it has no power. The specification says it needs 98 mA current, which ...
1
vote
1answer
60 views

Will one power adapter work with all shipping MacBook Air and Pro as of March 2013?

I have a Late-2008 Macbook White (MacBook4,1) model, and my AC Adapter broke. Now I want to buy replacement adapter, but since I am going to upgrade to a MBP13 or MBP15 in the next 1-2 years, I want ...
0
votes
0answers
99 views

Macbook Pro Mid 2010 not powering up after smc update

Macbook Pro Mid 2010 after SMC update 1.7 shuts down and now by pressing power button front light turning on for a few seconds, optical drive makes it's usual noise but no activity on monitor happens ...
1
vote
0answers
151 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 ...
0
votes
1answer
127 views

MacBook Pro battery charging stops early

I have a Mac Book Pro 15" over a year now. I'm having a problem with charging the battery. During work it stops charging and goes to battery powered mode. If I switch to a different power source it ...
3
votes
5answers
2k views

What would happen if I use a Macbook Air Powersupply with a 15" MacBook Pro Retina (or vice versa)

My girlfriend has a Macbook Air. The power supply is smaller and lighter than the Pro. It has an output of 14.85V and 3.05Amps. My Pro Retina has a power supply that is 20V and 4.25 Amps. Both ...
0
votes
2answers
477 views

Should I use an extension power cord instead?

I have the following Apple MacBook Pro Power adapter: 60W MagSafe PV85 Ouptput 16.5v--3.65A ADP-60AD T Model No. A1344 Instead of buying a Power Adapter, is it ok to buy an Extension power ...
1
vote
1answer
680 views

How can I force my laptop to shut down when I close the lid?

I'd like my Mac laptops to shut down completely when I close the lid. This is partly for convenience and partly for security reasons. I couldn't find a way to do this in the System Preferences (OS ...
0
votes
0answers
192 views

Charging suddenly stopped

After opening the lid on my 2010 MacBook Pro, the machine indicated it was not charging yet and the MagSafe light was amber. I followed the SMC instructions, installed the Java update, restarted, and ...
7
votes
3answers
4k views

Can i use my old MacBook charger on my new Mac?

I have a 2011 15" MBP, that uses a 85W power supply. My old 2008 MBP 15" also has a 85W power supply, but I cannot get it to work. Shouldnt it? Its the same watt power, and the adapter fits.
0
votes
1answer
337 views

Is grounding important?

Is the grounding wire forwarded to the Magsafe connector? There are these 2/3 pin adapters and it's so much easier to convert a 2 prong connector while travelling than the bulky three prong ones. I do ...
0
votes
1answer
265 views

Old MacBook power adapter on new MacBook Pro?

I have a 60W power adapter from my old 2008 MacBook. Can I use this power adapter on a new 13" MacBook Pro, which also came with a 60W power adapter? However the two power adapters have two ...
4
votes
2answers
8k views

Does closing the lid put a MacBook Pro to sleep? Would it hurt the computer if I carry it around without shutting it down?

When I first got my MacBook Pro, it took less than 30 seconds to start up. Now, after several months, it takes about two minutes to startup and I can tell that it is not as responsive when using some ...
3
votes
1answer
211 views

85W MagSafe adapter only delivers 77W?

My late 2011 17" MBP was delivered with an 85W MagSafe adapter. Under heavy stress (either CPU and/or GPU) the MBP has to draw additional power from the battery in order to keep everything running. ...
1
vote
1answer
122 views

Late 2008 MacBook Pro no longer wakes up on its own

Plain and simple here: about one week ago, my MacBook Pro stopped adhering to its wake schedule. I have had it set to wake every weekday at 6 a.m. for as long as I can remember. It has done so with ...
1
vote
2answers
537 views

Will a MacBook Pro (15-inch, Mid 2010) power up in clamshell mode?

Although part of my problem is covered here - Powering on while the lid is closed in clamshell mode, it alone doesn't solve my query. I'm trying to turn my MBP into a server, and because of that I ...
3
votes
2answers
481 views

Battery issue with MacBook Pro 13 inch (Early 2011)

So, around June 2011 I finally had the chance to buy my first Macbook Pro (13 inches, i5) But recently, I've noticed something wrong with my battery! Actually with only 2 months of use, I was under ...
3
votes
2answers
132 views

Unexplainable large number of cycles of MacBook Battery

My battery is a year old, but it has 189 cycles. Why is this? I always use my MacBook with the charger plugged in and very rarely without the charger.
2
votes
3answers
585 views

I have a 2008 Macbook Pro will a 85w power cord work?

I have a 2008 Macbook Pro and my cat recently chew through that power cord. I bought a 85w adpater but I don't want to open it if I know it won't work. Does an 85w work with a 2008 Macbook pro or ...
2
votes
1answer
282 views

Are there no explicit Power modes in Mac?

Does Macbook Pro not provide power modes (Power Saver, High Performance, etc) like a Windows laptop? If there is nothing like that, then I'd assume that OS X manages optimal settings itself. Or is ...
6
votes
5answers
4k views

How can I avoid my MacBook Pro giving me minor shocks?

The aluminum Macbook Pro gives a mild shock when connected to a wall socket and charging. It only happens when I'm, for example, not wearing shoes or slippers and my feet are resting on the ground ...
1
vote
2answers
214 views

Transporting from home to work (~10 min by car), should I just make my MacBook Pro sleep, or shut it completely down first?

I just got a new MacBook Pro, and is looking at how the power modes work, and according to this article: About Energy Saver sleep and idle modes in Mac OS X, making it sleep by closing the lid (say) ...
0
votes
1answer
92 views

Power Macbook Air with Early 2008 Macbook Pro

I have two batteries from my old 15" Macbook Pro Core 2 Duo (Early 2008). It's a non-unibody (discrete) model. Anyone know of any way to use these batteries to power my 2nd Gen Macbook Air? An ...
0
votes
3answers
4k views

MacBook Pro 2011 logging itself out after a period of inactivity

when I am not using it, at some point, every day, my MBP tries to log out on its own. When I 'wake it up' I can see message windows about "applications aborting logout", obviously because some ...
2
votes
2answers
261 views

I am only seeing 1:50 of estimated run time on a new MacBook Pro battery. Problems?

I have bought brand new MacBook pro 15-inch model with highest specifications in this June. I have also installed newest Mac OS, Lion. However, how it could be strange, when cable is not plugged it, ...
1
vote
2answers
347 views

Intermittent charge on Macbook Pro

I have a 2010 Macbook Pro with a MagSafe T Power adapter. The power adapter makes a buzzing/hissing/fuzzy noise when it is plugged into the wall. When it is plugged into my mac, my light turns green ...
2
votes
1answer
356 views

For a Macbook Pro, what are some recommend power plan settings for Windows 7 via Bootcamp

I would like to ask if anyone has some recommendations on some of the specific settings for Window power plans (especially advanced parameters) for a Macbook Pro. For me specifically I have an early ...
4
votes
1answer
6k views

MacBook Pro Charger has stopped working properly - any short-term fixes?

I have a MacBook Pro 15", about a year old. Today, the charger started working only intermittently. I've seen a few other people talking about similar problems, and most people say it's a problem with ...
25
votes
9answers
27k views

Can a 60W MagSafe power adapter work interchangeably on a Macbook Pro that “requires” an 85W adapter?

I have a 13" Macbook Pro that came with a 60W power adapter and a 15" Macbook Pro that came with a 85W power adapter. Can I use either adapter with either laptop? There seems to be disagreement in the ...
1
vote
5answers
410 views

I think I have bricked my MacBook Pro, what are my options to get it fixed?

I have been having power issues with my MacBook Pro (late 2007?). The power cable had a dodgy connection, and kept cutting out. This destroyed the life of the battery to the point where it would only ...
0
votes
2answers
889 views

MacBook will not turn on

I have a MacBook pro and it won't turn on. Basically I press the power button and the White light at the front turns on. Then a few seconds later it just crashes and the White light goes off then the ...
3
votes
2answers
4k views

Is there a presentation mode on mac?

When watching a video, or making a presentation, is there an option or a tool to disable all screensaving, energy savings and all? Regardless of if the power is plugged, I'd like to keep the screen ...
10
votes
3answers
3k views

Should I use the adapter or the battery?

I want to know when my MBP's battery was fully charged it's better to unplug my adapter and use my battery power or still let use adapter power? I somewhere read that when MBP's battery was fully ...
3
votes
1answer
3k views

Why does battery die during sleep mode?

I'm running MacOSX 10.5.8 on a MacBook Pro. I was working on my computer last night. I finished work, closed the lid and expected the computer to go to sleep. I assume this is the Apple Safe Sleep ...