Powers on but no display? - Nexus 7 Q&A, Help & Troubleshooting

Hi guys, I picked up a 1st gen 8GB Nexus 7 from eBay, it was sold as faulty (they said it doesn't power on) it does actually power on, Windows 7 connects and i can access the storage and i can hear my finger presses on the screen so i know it's powered on and the digitizer is working however there is no display whatsoever, i have taken the back off and reseated the battery connection and all ribbon cables to the digitizer / LCD assembly and nothing, the LCD looks immaculate there are no fractures or bleeding, absolutely no signs of damage yet it just stays black? I suspect the short ribbon cable to the LCD is at fault but before i order a replacement is there anything else you guys can think of?

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HTC HD2 dropped, Black Screen, but touch and whole phone works well

Hi
I've dropped my HD2. Everything is working, including touch screen, I can unlock the phone, I can answer the call, but screen is black, not broken.
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Could simply be the lcd cable has slipped slightly but probably more likely an LCD replacement needed.
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hello
I've got a little update - lcd screen is working well - I mean it displays the image, the only malfunction is backlit. Right now when i use flashlign I can actually see whats on screen. Do you have experience or think that backlit connection can be repaired? Do You have any schematics for hd2' lcd ?
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Samsung S4 - tried to replace broken glass and digitizer/LCD broke.

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Hello,
Is it vibrating when turned on via the power button or connected to the charger? If so, the motherboard is fine.
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Need Help-Backlight only after new LCD Screen on G530

I have a G530, the Tmobile version, though fully unlocked, rooted, etc. I had cracked the digitizer and while waiting for a new one I dropped it again and the LCD popped out with the digitizer, disconnecting itself and would come back on after that. I got a new LCD and attached it to the board (disassembled) and all worked. I mounted the board back in the case and reattached everything but then only the backlight would turn on during initial boot. The connection seemed loose and after 2-3 reconnects I got my display to work, but while attaching the digitzer, the glass at the very top, just before the lcd starts broke... So I got ANOTHER lcd and digitizer (They're cheap) This LCD only gives the backlight at initial power on, with no display response, but no matter what I do, I can't get it to kick on like the last one.
I'm trying to get an idea if it is the new LCD, or if my connector on the board is broken, It looks like maybe a bit of plastic at the top broke off.. and is making the connector a bit loose. Since I get a backlight, anyone have any experience as to which is more likely broken? I'm not sure if power from the connector goes straight to the backlight, or if it goes to the LCD first, and if I would get a backlight with a bad LCD. These are cheap $25 LCD & Digitizer bundles from Amazon, like 'Mencia' brand so good chance I could have gotten a new one that is dead.
I'll try to get another up close shot of the connector, this magnifying app didn't focus in as well and you cant see the individual connectors as well, but they are fine, its the very top part of the connector looks a bit smaller. The bottom part has a piece of metal sandwiched between the plastic, but the top doesn't have a bit of plastic after the metal tab, of course, it could be absolutely nothing :s

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