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My Lumia 640 Win 10 won't turn on. I hear vibration but screen remains black. What do I do?

Views: 887 Replies: 1
So the issue started two days ago after I swapped the battery (40% charged) of my lumia with other 640's which had 9% charge in it. After that phone wont turn on. There isn't even a backlight to the black screen. And if I put my lumia to charge, it keeps vibrating at regular intervals (usually 10 seconds). I'm on latest windows 10 build. I also tried fully charge battery but it was no use. Please help. I tried many things written on forums, but I can't seem to fix it. I bought it in USA Best Buy but now I'm far far away. Can't claim its warranty from here.
jimmy
Asked: 00:09 23/07/2016
greety 00:09 23/07/2016
0
So the issue started two days ago after I swapped the battery (40% charged) of my lumia with other 640's which had 9% charge in it. After that phone wont turn on. There isn't even a backlight to the black screen. And if I put my lumia to charge, it keeps vibrating at regular intervals (usually 10 seconds). I'm on latest windows 10 build. I also tried fully charge battery but it was no use. Please help. I tried many things written on forums, but I can't seem to fix it. I bought it in USA Best Buy but now I'm far far away. Can't claim its warranty from here.It seems a faulty battery for me : check copper pins, maybe are bended , short circuited, or dirty.

Clean usb port and plug too

Then plug and try a soft reset.

My Lumia 640 Win 10 won't turn on. I hear vibration but screen remains black. What do I do?

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