Changed screen and digitizer. Touchscreen working but screen. Help! - Nexus 7 Q&A, Help & Troubleshooting

I followed Android Centrals guide to change my broken screen on my Nexus 7. Sadly, the screen won't come on. I can hear that it powers on. I power it on, touch where the back button should be and I can hear that it recognizes my touch but the screen doesn't come on. Can anyone help or direct me to any solutions or ideas? Thank you
Sent from my Nexus 4 using xda premium

livpalm said:
I followed Android Centrals guide to change my broken screen on my Nexus 7. Sadly, the screen won't come on. I can hear that it powers on. I power it on, touch where the back button should be and I can hear that it recognizes my touch but the screen doesn't come on. Can anyone help or direct me to any solutions or ideas? Thank you
Sent from my Nexus 4 using xda premium
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There are two cables from the screen assembly to the mainboard. The flat copper looking cable is the digitizer and the other cable, with a plug on the end, is the screen. Make sure that second cable is plugged in tight.

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Check the wiring again.
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Hi my friend gave me her HTC wildfire to fix the digitiser as another friend dropped the phone in olive oil and well oil doesn't go well with the capacitive screen.
While trying to clean the capacitive part (which failed I'm going to have to buy a new screen) I managed to break the connector going to the front buttons the small ribbon cable the opposite side of the display and capacitive cable attachments.
So my question what does this cable do I assume that this only powers the lights behind them or does it also run the buttons?
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It's just the lights, I broke mine when fitting a new screen. The buttons still work i just have no backlight.
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Thanks that's what I thought, the buttons still work on occasion and are part of the capacitive screen.
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Hi, I am have this device HTC DESIRE HD. This device not turn on after replacement touch screen. after pressing the power button is activated vibrator, but the display does not light up. Please help me
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Dismantle it again and check LCD connector.
Spakainz said:
Dismantle it again and check LCD connector.
Click to expand...
Click to collapse
I have already used these methods
is the new screen ok
are you sure that your new screen isn't broken too.
I think that it's not the screen, although the phone to vibrate a few times
disconnect digitizer ribbon and see if lcd turns on.

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@swid441 Black screen issue? You backlight bleeding?
Not back light bleeding. It's the issue where screen goes and stays completely black. Tablets is on and capacitive buttons work but no display- all black.
Sent from my SAMSUNG-SM-N900A using Tapatalk
I've had that happen to me after I dropped mine once...with 2 cases on. Anyway, to fix it, I just open up the back and reconnected the screen, very easy to do, I think it jarred the tiny connection. The tablet is so awesome otherwise and it might never happen if I hadn't dropped it
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What did you use to open up your Note? I rebooted my note the other day and the screen was black. The buttons light up but the screen is off. I want t to try and reconnect the cable before I but a new lcd and digitizer.
Did you open it from the front or the back and what did you use?
Sent from my SM-G900A using XDA Free mobile app
If its still showing black screen, keep reconecting, smoothing the cable oit and pressing the un sleep key to see if the screen is on. The cable is so sensitive it takes me about 6 tries to get it perfect. I use whatever I have around to open it, like my thin nail file, very carefully, around the silver edges from the front. I remember I saw a youtube video of this somewhere. Good luck

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