TrackPad won't turn on after batteries were changed.

If you could not turn on your Magic TrackPad, if you're press the power button on the peripheral, but it doesn't light: one of the reasons is a faulty contacts. Open the battery module. Remove the batteries. Take a long screwdriver and put a bit of cotton on its end. Wet the cotton by the medicine alcohol. The carefully move the end of the screwdriver with the cotton into the battery module and carefully clean the remote side of the module (you can see the metallic contact there). Then carefully clean the screwing cover of the module. Wait about 10-15 minutes until the medicine alcohol evaporates. Then put the batteries back, screw the cover and try tu turn on your Magic TrackPad by its power button.

Warning! Don't use a huge peace of cotton and much medicine alcohol, you must clean by it, not wash in ;) Don't hurry up after the cleaning: wait until the medicine alcohol evaporates, only then you can insert batteries. Don't use drinks like whiskey, they have components that will not evaporate and the device will be broken. Use only clean medicine alcohol.

P.S. If you can't repair the TrackPad, maybe its hardware is damaged.

This just happened to me and I am happy to say I finally figured out what happened. There is a spring on the inside of the cylander that contains the batteris next to the power button. The spring lost it well "spring." To fix the problem I folded up a piece of aluminum foil into a tiny square probablly a milimeter or two thick and put it in between the negative ( - ) side of the batter any the little piece you need to screw in with a coin. It worked like a charm! Give it a whirl.

Just happened to me. Got the trackpad to work again after I inserted the two batteries and using my finger to bounce them in and out quickly a few times. Really need to push them in about 1 cm every time. Replaced the screw in cap and it worked again. Hope this helps.

Just experienced the same issue where the trackpad only powered on for a moment (under a second) after replacing the batteries. After trying three sets I broke out the voltmeter to see if battery voltage might have something to do with it, sure enough two pair only registered 1.3v, one battery was completely dead. The fix was a fourth set of batteries, both putting out over 1.5v. If you don't have a volt meter, I'd try buying a new pack of batteries and testing different combinatioins until it powers on.

In my case the Magic Trackpad required batteries putting out 1.5v to startup. Hope this helps someone.

I was having the same problem, and after much trial and error (cleaning the points, bouncing the spring, etc.), I discovered that the problem in my case was simply that the power button was a little wonky: rather than press straight down on it, I have to press it along the top edge (when the trackpad is lying flat). Pressing it anywhere else will not turn it on. I have changed batteries and replicated the result. That's just my case, but if you still haven't solved your problem, give that a try.

I wanted to throw my experience in here as well. I haven't used my trackpad in ages, and wanted to turn it on. There were no batteries in it, I first put rechargeables in, then fresh alkalines. Neither worked. After reading some of the responses here, I cleaned the screw-end contacts with 99% rubbing alcohol. It looked like there was some battery acid buildup. After working it, I put the alkalines back in and the trackpad powered up. It has warned me that the power is low, but I'll see if that lasts.

Just hit it with your finger in the place the two batteries are connected! You should see the green light right away!

I tried all of this metods,and this one works like charm! 🙂 - "Just happened to me. Got the trackpad to work again after I inserted the two batteries and using my finger to bounce them in and out quickly a few times. Really need to push them in about 1 cm every time. Replaced the screw in cap and it worked again. Hope this helps."

I'm not sure if anything has changed, but Apple definitely released this device prone to issues turning on. I found myself removing, and putting back in the batteries over and over again until it turns on. Recently I found if I put in the batteries and shake it a bit, and try turning it on, it usually works. I need to do this for all track pads which I've purchased prior to 2012.

Not sure what to tell you. I would have suggested you try to re-pair with the bluetooth preferences if it were not for the fact you said you don't see the light on the TP when you pushed its switch.

So some obvious question about what you said. Did you try another set of batteries for comparison purposes? Did you push the button long enough?

What troubles me about many of these posts is that no-one specifies the brand of batteries they put in.

The make (though there are many fakes around, particularly in discount stores) is important because many batteries are slightly shorter in length which may be why so many people have to use padding.

You may find this user tip helpful.

https://discussions.apple.com/docs/DOC-9451

I suddenly have the same problem. I have had the Magic TrackPad for a while but I don't use it as much as my Bluetooth Magic Mighty Mouse (the original more ergonomic one not the latest almost slimmer version) – now suddenly the Magic TrackPad won't work. I find it hard to believe it is already worn out since I don't really use it regularly – hardly at all. After replacing batteries the green light will come on but only momentarily then off. I also tried to reset the Bluetooth connection however the Magic TrackPad will not be "discovered". I don't get it – no magic left in this trackpad. Running OS 10.6.8 on a MacPro Quad-Core Intel Xeon 2.8 GHz.

I tried the Magic TrackPad with two systems AND changed batteries and battery brands (DuraCell and Energizer). The green liight blinks, the Bluetooth setup says it recongnizes the TrackPad but when I click "Continue" to finalize the connection – I get an "Unsuccessful" message. I retried and retried but no luck.

Yes, I use a Bluetooth Apple Wireless Keyboard and Mighty Mouse (the rounded mouse - though I have the new multi-touch Apple Magic Mouse [don't use it] and I wear a Bose Bluetooth Headphone Series 2 with my iPhone 4S which I keep next to me all day as I work (however when I tested the trackpad I was not wearing my Bose bluetooth).

My small business is wired using a broadband cable connection. Our AirPort Extreme Base Station and Time Capsule is in my back office – we also have 3 small AirPort Express stations and all devices use 802.11n.

Only two of our computers depend on bluetooth input devices, no Bluetooth used with my iPad or our three other computers. iPod nano Gen 5 uses a NikePlus bluetooth receiver (I use daily but I disconnect when I'm not out on a run).

Probably TMI but I thought you might like to know all the "wireless" signals in our office.

Sounds like it is defective.

How old is it?

Did you buy it with your computer or separately?

If you bought it with your computer and it is under a year old, it is still under warranty.

If you have 3 year AppleCare, then it would also be under warranty if less than 3 years old.