Not from the LCD (the cable is not removable on that side) but from the motherboard. The LCD gets its signal through digital lines, the backlight just gets an analog power source. If at least a weak connection is present, that will work. To disconnect the LCD ribbon cable, your phone has to be disassembled, of course. No other way.
Edited by MazaQ77 at 2016-12-15 22:15 \n\nThe same problem. Any new ideas?
Problem exist in Umi Touch, Rome, Super etc, etc. Its not related with the OS version - thats for sure.
I guess the issue is the connection with motherboard, but not only this:
I was realy angry so I hit few times top and bottom edge on the table and now screen is working :O
Earlier I tried to turn phone on and off many times and few times i was lucky.
It's very strange that Umi is hidding this problem instead to fix it...
edit: if you want to try fix the screen connection here you are some help: https://www.youtube.com/watch?v=l_VMcIX0hJY&t=207s
I fixed the problem. It might be useful for some users:
in fact the problem was connection of the display with motherboard. After disassembling the phone and improve this detail it is all ok. Generally, assembly quality is very poor. Soldering points are sloppy, missing screws in the cover. Installation of the tape is bad, crooked arranged. I'm not surprised that so many phones have problems ...
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Post time 2016-6-8 18:16:14
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Post time 2016-6-9 04:03:57
