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Author Topic: Really Dead Nexus 7  (Read 6293 times)

Offline Rabbit

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Really Dead Nexus 7
« on: June 19, 2014, 02:45:44 PM »
Totally dead tablet.  I've tried all of the recommendations I could track down in past threads and even called ASUS and learned a new one.  Still dead, quiet , black screen.
ASUS quoted $100 estimate for a simple fix to $200 for something more complex like replacing a mother board.
Anyone had luck with non factory repair centers that might be more reasonable?
Would you just trash it, or try screen or battery replacements?
Any and all comments greatly appreciated.
Thanks,
Rob



Offline chipgallo

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Re: Really Dead Nexus 7
« Reply #1 on: June 19, 2014, 02:52:48 PM »
What did it do before totally failing? Any symptoms or unusual things happen?

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Offline birdastrompgman

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Re: Really Dead Nexus 7
« Reply #2 on: June 19, 2014, 05:00:58 PM »
I wouldn't trash it, nor would I start replacing parts without first identifying the problem.  See if you can eliminate the battery and display, then APX mode.

Asus' repair prices are hyperinflated.  It's cheaper to buy a used replacement. 
Bird has seen >650 North American bird species
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Offline Rabbit

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Re: Really Dead Nexus 7
« Reply #3 on: June 19, 2014, 06:28:18 PM »
Thanks for the replies!  To answer your questions:
1.  Nothing unusual prior to death.   Worked fine in the evening, turned off, charged all night, and in the a.m. nothing!
At all.  Nada.  Zilch.  Butkus.
2.  Under the circumstances, how do I go about checking the battery and/or display?
Thanks again,
Rob

Offline birdastrompgman

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Re: Really Dead Nexus 7
« Reply #4 on: June 19, 2014, 11:47:55 PM »
Hook the battery up to a 2 cell flashlight bulb, and see if it lights up, or hook it to a multimeter and see if it's putting out >3.75V DC.

Find another N7 and swap displays.

Connect your N7 to your PC's rear USB 2.0 port via a USB cable and see if it's recognized as an APX device in Device Manager.  Hold the power button for 60 seconds while connected to your PC, and see if it's recognized.
Bird has seen >650 North American bird species
Rooted Nexus 7
49.5 mpg avg for 53k miles in non-hybrid Scion xB
Retired 9 yrs, and loving it

Offline Rabbit

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Re: Really Dead Nexus 7
« Reply #5 on: June 20, 2014, 08:52:26 PM »
Like the idea of putting the volt meter to the battery but I haven't identified it yet.  Most of what I see when I take the cover off is a wide black electrical tape type covering.  Would the battery be under that?
Will also try the OTG cable connect to the laptop and see if anything reacts.
Thanks,   I'll let you know.   I sure appreciate everyones time on this.
Rob

Offline matt

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Re: Really Dead Nexus 7
« Reply #6 on: June 20, 2014, 09:29:49 PM »
Two pairs red and black wires, possibly two battery packs in parallel. Other wires are prob temp sensor.
If you disconnect the battery then try a charger, could eliminate a shorted cell?

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Offline matt

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Re: Really Dead Nexus 7
« Reply #7 on: June 20, 2014, 09:34:41 PM »

Offline matt

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Re: Really Dead Nexus 7
« Reply #8 on: June 20, 2014, 10:09:57 PM »
Internal connection check video. Easy Way how to Fix Asus NEXUS 7 no Video & Touch…:


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Offline matt

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Re: Really Dead Nexus 7
« Reply #9 on: June 20, 2014, 10:53:38 PM »
If the charging cable went bad, the nexus could have discharged to the point of inoperability. Try another cable. Haven't found a schematic, just logic block diagrams, looks like the charging circuit is on one of the boards instead of the battery like other tabs.

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Offline Rabbit

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Re: Really Dead Nexus 7
« Reply #10 on: June 21, 2014, 05:16:12 PM »
Appreciate all the advice, but so far, still no go.  Have confirmed non-function with other known to be good charger cords.
Watched both videos.  Informative, even cause for optimism, but still nothing.
Question:
If battery is dead, wouldn't unit still turn on from a/c charger?  If not, then I might try a new battery if they aren't too expensive.  (Assume their not returnable.)
If it should start with direct power despite dead battery though, since I've checked the other connector mentioned in the video, then I think it's time to wave goodbye.
 :(

Offline matt

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Re: Really Dead Nexus 7
« Reply #11 on: June 21, 2014, 06:10:26 PM »
Well, here's a long thread on XDA.. http://forum.xda-developers.com/showthread.php?t=2090826



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Offline Rabbit

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Re: Really Dead Nexus 7
« Reply #12 on: June 22, 2014, 02:28:09 PM »
Matt,
Did you say "long"?
"The road goes on forever and the party never ends!"   Thank you, R.E.K.
Going to pull the battery tonight and see if I can check it for charge and put it back in.
If no apparent charge and still not working I found a place on Amazon that has batteries for $30.00 that can be returned for full refund, no re-stocking fees if doesn't do the trick.  I'd only be out the postage. 
I'll let you know how it turns out, and thanks for the link.
Rob

Offline Rabbit

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Re: Really Dead Nexus 7
« Reply #13 on: June 22, 2014, 04:35:21 PM »
Well, I checked the battery: 3.99 v. both sides.  Disconnect, wait, attempt to re-boot.  Nada.
Feeling like I've exhausted all the easy and/or inexpensive options.
When people finally get disgusted with their Nexus experience and decide to jump ship, where do they go?
Open to suggestions.
My MacBook is so old it has wrinkles and my Sansa MP3 could have belonged to the Flintstones.  Both still chugging along.  With Asus best answer to a 1 1/2 year death in the family being "$100 to $200.00 depending..." I see no reason keep traveling down this road.  Things happen.  No problem there.  It's how you deal with them when they do that counts in my book.  On that count I rank Asus and the Nexus 7 lower than whale s--t.
End of RAnt.
Thanks for listening.  Thanks to all who tried to help.
Happy Trails,
Rob

Offline S.Prime

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Re: Really Dead Nexus 7
« Reply #14 on: June 22, 2014, 08:01:44 PM »
@Rob, I can identify with your frustration, but ranking our tablet lower than whale "s___" is harsh and dependent on your personal experience with a single device. I will be the first to admit, that if I were you, I could feel the same, if I had not experienced the abandonment  by  vendors like HTC and Lenovo on other Tablets. Regardless of your device failure, you do have a repair option, as unpalatable as you or I may find it, unlike I saw with other vendors. Thank you, for reaching out to our forum and for your appreciation of the help you received from some of our most dedicated members. Keep us posted on your choice of a new tablet and your satisfaction.

Jim

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IT Service Professional - I just want a device to be productive.

 


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