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Cube U30GT2 Problems! (tablet doesn't charge / not booting anymore)
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Clios
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2013/04/23 - 13:45
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I've received mine one week ago from cube-tablet.com, the tablet has been working well the first day, when the battery was empty I tried to charge it, nothing happened no logo, no light, I write now every day to "cube-tablet" where I've bought it, they don't let me ship it back, they answer it's a firmware problem, I should update the firmware to solve the problem, I don't know if it's possible with a completely empty battery, and when I connect the tablet with my computer there is no sign of connection...Please if you can, help me, thanks.

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admin

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2013/04/23 - 14:08
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So the battery doesn't power up when you put the charger in ? Have you tried to carefully move the charger socket in the tablet charging connector  ?

Even if it doesn't start, try to put your tablet in flashing mode, check here:

http://www.arctablet.com/blog/forum/cube-u30gt2/cube-u30gt2-android-4-1-custom-root-firmware-v-1-03/page-2/#p21258

From what I have read, cube-tablet.com site doesn't have a very good reputation when it comes to support. If flashing doesn't work, you can't get your tablet working again and they don't want to support it for RMA, maybe it's worth filing a complaint with the payment medium you used (Paypal / VISA / your bank).

Good luck, please keep us posted.

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Clios
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2013/04/23 - 14:36
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Thank you for your help! I'll try to do what you've said.

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M.Moe
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2013/04/23 - 23:42
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Clios said
I've received mine one week ago from cube-tablet.com, the tablet has been working well the first day, when the battery was empty I tried to charge it, nothing happened no logo, no light...

I had the same problem too. I live in Europe so I need a US to EU plug adapter in order to plug the charger in. There are four variations how can I attach the charger to the wall socket via the plug adapter. It's weird but just one of these variations works for me. If you also use plug adapter just try this method, probably it will work for you too.


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WatchFan1
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2013/04/29 - 20:37
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Check your chargers. Between my wife, my friend and myself, we bought 3 

Cube U30GT2 tablets. Of the three chargers, one was 'dead' after 3 days.

I tested it with a voltmeter and it showed 0V, while the other 2 showed 12V.

 

The company I bought it from is sending me a replacement charger.

In the meanwhile I also bought another one for $5.60 from Aliexpress:

http://www.aliexpress.com/snapshot/228204294.html

If you buy it somewhere else, make sure the specs are:

 

Input: 100V - 240V ~ 50/60Hz  

Output: 12V 1.5A~2A

Connector diameter: 2.5mm

 

...and I also bought another one for my car from ebay for a few bucks.

 

 

 

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admin

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2013/04/29 - 20:52
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For the completeness of the specs, I'd add that polarity is + in the center of the plug.

The vast majority of chargers have similar setup, but I thought it was worth mentioning Wink

Cheers.

 

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ericb
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2013/05/29 - 18:40
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I also have same problem with u30GT2 ( 3 pieces !)

All 3 started normaly for first time out of box, after few hours i have them powered down and when you put in on within few minutes it will boot.

But when you shut of and wait for one hour it will not boot.

You have to connect power adapter and then it will boot.

All 3 are from same batch so i think it is a hardware problem.

yesterday i received 5 new U30GT2's and they don't have that problem.

I have read this problem in several fora so it must be known by Cube i guess.

I wonder what the solution is, it is not the firmware because on the last 5 pieces is the same firmware 4.2.2 V2.01

Anyone any idea??

I think i will send them back all three....

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WatchFan1
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2013/05/29 - 22:28
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Are you saying that U30GT2 is now officially shipping with 4.2.2 from factory ???

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ericb
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2013/05/29 - 22:47
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WatchFan1 said
Are you saying that U30GT2 is now officially shipping with 4.2.2 from factory ???

The one's i have received were with 4.2.2 V2.01

But it is possible seller on aliexpress has flshed them and not cube factory, i don't know

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streuphy
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2013/05/29 - 23:34
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Hi,

 

Same problem of non recharging u30gt2.

 

It is hard for me though to troubleshoot the issue as I don't know if the problem comes from the DC converter or the battery itself.

 

According to your experience, what is the easiest way to find a replacement part for the charger

12V - 2A and 2,5mm outer barrel connector ?

 

Is there a more common model of tablet using the same type of adapter that is marketed in Europe _ so I could potentially pop up at brick & mortar shop and run a test without having to wait X days for a converter to arrive from China ?

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admin

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2013/05/29 - 23:43
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"Chinese chargers", either the spare ones or the ones that come with a tablet are sometimes full of surprises:

they don't deliver the advertised current, they're badly isolated, prone to short circuit, etc...

It may be wiser to invest a few more bucks and buy a solid charger that you can use for your current tablet and maybe future ones. I bought one on Amazon a while ago, I'll have to find the model # and will post it here.

Cheers.

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ericb
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2013/05/30 - 09:21
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streuphy said
Hi,

 

Same problem of non recharging u30gt2.

 

It is hard for me though to troubleshoot the issue as I don't know if the problem comes from the DC converter or the battery itself.

 

According to your experience, what is the easiest way to find a replacement part for the charger

12V - 2A and 2,5mm outer barrel connector ?

 

Is there a more common model of tablet using the same type of adapter that is marketed in Europe _ so I could potentially pop up at brick & mortar shop and run a test without having to wait X days for a converter to arrive from China ?

 

I don't know where you live but i sell the adapters for 9 euro.

I don'tknow if i may advertise here but you can find them on http://www.bitspeed.nl

That's my webshop, but i don't know if you live in the netherlands or belgium

admin, if this is not allowed please remove...

 

But i think the problem of not starting is a hardware issue and not a adapter issue

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Clios
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2013/05/30 - 17:57
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The problem for me was the charger, it's defective, as watchFan1 had said, but it was not so easy to find the same charger, that's why I could not fint it out faster.

I've bought now¬†a¬†charger¬†for 28‚ā¨, ¬†much better than the original, here in Germany at "Conrad electronic".

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streuphy
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2013/05/30 - 23:04
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Quick update & Question

 

I've found a suitable adapter today and I was able to verify that my u30gt2 would boot and power up after using the new adapter. The original one was definitively faulty.

The tablet runs when the adapter is plugged. So at least it isn't totally dead.

 

However, the batteries still don't charge. Android settings report 0%.

And the tablet is acting funny - like the tactile interface sometimes doesn't correctly locate my fingers and OS itself is not stable. I even see display bugs.

It looks like the device is underpowered and I experience CPU glitches ?!?

 

On a different forum, I have read the story of a user opening it's tablet and checking that the battery were correctly wired / in place etc...

What are the odds of a faulty battery vs. a somehow mis-placed battery or anything that I could fix with a torx screw driver :)

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sadness
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2013/06/08 - 22:09
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ericb said

But when you shut of and wait for one hour it will not boot.

You have to connect power adapter and then it will boot.

same problem here :( mine is won't boot even i connect power adapter.. i have to wait at least an hour.. i don't have any idea about solution. i think it is hardware problem.. any idea will be appreciated

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