Galaxy S4 won't boot up. Won't turn on

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Samsung Galaxy S4 SPH-L720

tosca @tcbelle

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发帖于: 2016年10月6日

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Galaxy S4 won't boot up. Won't turn on

Tried all known troubleshooting and nothing works.

- During night I Noticed that the display came on and off twice so I just shut down the phone. Next morning it would not come back on.

Battery was fully charge when I shut it down. Even hooked it up into PC with USB and nothing. Computer can't find it because it's not coming on. Left plugged into PC and it feels warm so it's on charge but that's not the issue.

I was told perhaps it's the motherboard- just wonder if anyone had any idea of what else it could be. It's only 2 years old and flawless physically, buttons are good, battery is good just can't think of what could have happened.

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Omri Swarbrick @omri 声誉积分: 99 6 1 · Answer 1 · 2016-10-06T20:20:54-07:00

Omri Swarbrick @omri

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Attempt to boot into safe mode

• Turn the device off.

• Press and hold the Power key.

• When 'Samsung Galaxy S5' appears on the screen, release the Power key.

• Immediately after releasing the Power key, press and hold the Volume down key.

• Continue to hold the Volume down key until the device finishes restarting.

If that doesn't fix your issues your next best bet is to order some tools and dismantle and reassemble it to make sure all the ribbon cables are plugged in properly.

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Sometimes you can boot strait into the BIOS to access safe mode by just holding either volume up or volume down and the power button.

由 Omri Swarbrick 完成的 2016年10月6日

Unfortunately as I mentioned I've tried this and 6 other methods. Nothing worked.

Used All these scenarios. https://www.youtube.com/watch?v=G1LNalLY...

由 tosca 完成的 2016年10月6日

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Samsung Galaxy S4 SPH-L720

Galaxy S4 won't boot up. Won't turn on

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