iPhone 3G won't turn on

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iPhone 3G

Second generation of iPhone. Model A1241 / 8 or 16 GB capacity / black or white plastic back. Repair is more straightforward than the first iPhone. requires screwdrivers, prying, and suction tools.

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Koston Morin @kostonmorin

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Postado: 9 de abr de 2014

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iPhone 3G won't turn on

Hey, guys. I have a problem here.

I have had an iPhone 3g for a while now, and the other day, my little brother threw it on the ground. The screen still works, because when it's plugged in I can get the openiBoot screen, but when I load iOS, it turns off as if the battery died (weird imprint of openiBoot screen). But, it loads android without a problem. The phone does not turn on unless it's plugged in, so I thought maybe it was the battery. I ordered a new one from here, and it didn't solve anything. Any suggestions?

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Gary @gary78375 Rep: 8,5 mil 15 12 8 · Answer 1 · 2014-04-09T22:20:46-07:00

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Gary @gary78375

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Have you tried checking to see if you can't boost power to your USB ports?

1 Open the Device Manager by clicking "Start," "Control Panel," "Hardware and Sound" and "Device Manager."

2 Expand the "Universal Serial Bus controllers" tree by clicking on the arrow next to that heading. Here, you will see all USB controllers and USB root hubs (USB ports) on your computer.

3 Right-click on the "USB Root Hub" you want to change, and then click on "Properties" to open the USB port's Properties dialog box. Under the Power Management tab, you will see the option for restricting power to the USB port to save battery power. Choose your desired settings using the checkboxes and then click on "OK" to save these settings.

4 Repeat Step 3 for all USB Root Hub devices to customize the power output to your computer's USB ports.

You can always try later down the road a device like this that plugs into your laptop and not only adds more usb ports, but also gives you power from a wall outlet as well boosting usb port powers and data transfers. Something to consider for the future. http://www.amazon.co.uk/Satechi-Power-Ad...

~Gadget~

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ERGH! It's supplying more power than it was before but it's still not enough. Is there anything maybe in the bios that I could change? Or another setting in control panel?

SO CLOSE! I feel like we're on to something.

10 de abr de 2014 por Koston Morin

Check your BIOS to see if you can find an option named "USB 2.0 HS Reference Voltage". If that option is available, change the associated value from "Low" or "Medium" to "High" or "Maximum". That's really the only other option I can think of without having to get an external power source usb port hub that you can plug into your computer and the wall.

10 de abr de 2014 por Gary

I do not see any setting, even remotely close to that.

10 de abr de 2014 por Koston Morin

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Jonny @jonny22177 Rep: 489 10 13 1 · Answer 2 · 2014-04-09T18:06:19-07:00

Jonny @jonny22177

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Start by a soft reset, then a hard reset, then a factory restore with fresh iOS installed.

It is possible to install the battery incorrectly...

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How do you do these resets?

9 de abr de 2014 por mayer

I cannot do a reset because I forgot to mention that my computer doesn't supply enough power through USB for it to stay on. Only through wall outlet.

9 de abr de 2014 por Koston Morin

Try to put it in DFU. If you cannot get enough power for it to charge all of the way, then your only option is to redo everything you did. BTW, I recall a time where I had a 3GS, I replaced the battery and it didn't do anything. I lost interest and threw it in my drawer. Later, I replaced the battery and it happened to work perfectly...

12 de abr de 2014 por Jonny

Okay. So, I put it in DFU mode and let it charge for a good 45 minutes. I unplugged it and tried to turn it on (First I pressed Home+Lock for 15 seconds, then sttempted to turn it on normally) and no avail. But, I put it in DFU mode while on the charger a second time, and plugged it into my computer, and IT'S RECOGNIZED! That's a start, right?

12 de abr de 2014 por Koston Morin

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