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[Blacksnow]

MarriageCube U30GT
Cube U30GT
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This topic discusses all cases of marriage of the Cube U30GT tablet. If you are faced with the purchase of a defective model - describe the "symptoms" of the problem apparatus in this topic.

It seems that I first sent my tablet back to the seller, that's why I created the theme ...

The test result of 10 tablets of one of the sellers, thanksv-haker

Stripes on the screen

Fausteg videos

Advice from me - to disassemble, check the trains, assemble and check. When someone helps - I will write here.

Random reboots, freezes

Video shared Vitalio08

Highlight

According to information from the communication of one of the sellers withv-haker- there is light on the vast majority of U30GT.

Defective pixels

venz0ja adviseddrive a few hourshis videoandYouTube video
Andrey_GAV offered freeze tablet Read the comments on the browser before applying the method, for our screen may not be suitable!
Since only I had a broken pixel, and after finding a problem with charging, I immediately sent the tablet back - it was not possible to check the effectiveness of the methods ...

No charge tablet

Here are a few options.
1) Just the plug goes away
2) Charging is faulty
3) The battery controller is defective - which is what happened to me.
The tablet thought it was charging, but in fact there was no charge

Weak wifi signal

How to test the antenna(programWifi Analyzer)
A post with photos about the problem of an incorrectly soldered antenna is developed.and a few further messages on problem solving

Overheating stains when charging

Cube U30GT - Marriage (Post # 14810508)

Tablet return

Returned through the mail of Russia ...
When sending, I was floated that I can only be sent in the Russian mail box or their envelopes ... I didn’t argue, I found a way out: I packed it back in the box in which the tablet was sent, I bought the largest package with bubbles (dimensions 350 * 470) and I shoved a box in there =)
When sending you will be given a customs declaration (2 pieces of paper), filled it manually. Asked to write "I am familiar with the risks" on it.
In addition to these two pieces of paper do not need anything. Before sending, the operator looks at what's in your package, and sticks everything-sticks ...
Sending 1429gr (1399gr is a tablet in a box, 30gr is a bag with bubbles) I received 631rub 18kop
They also said that they can send current by land transport, because Avia such items are forbidden for transportation ... It was already steamed, 2 and a half hours it all went away - I did not argue with anything ...

Post has been editedpaladin7 - 24.10.12, 22:36

Reason for editing: +2 votes to Robin at the request of soul48

[EVIL386]

Hello!

Year 4 worked the tablet, then stopped charging. Disassembled, threw out swollen batteries, replaced with new ones. The tablet is charging, but when you pull out the plug of the power supply goes out and does not turn on. After connecting the power supply and re-switching on - again 0%. There is a symptom in the cap, but there is no cure. Poke, please.

[Magola2]

First you need to measure the voltage on akbshkah, should be no less than 7 volts, it is desirable. If there are none, then you need to charge it from the power supply unit otherwise it will not be charged. If there is voltage, etc. Everything is normal, you need to transfer the controller from the old acb (shawl) to a new one. We always transfer because 80% of problems with charging new acb on Chinese tablets are so excused :) Not in the subject, but I will write. I ordered a WiFi rk903 microcircuit. Prior to this, the tablet did not include wifi for any reason. Once warmed up, helped for 2 weeks. Changed. So far I have read that both the bluetooth and the Gypies are hanging there. At first, the tablet was hanging, only the desktop appeared. I sewed, like norms, bluetooth works, zhipies works, and what do you think ??? A wifi does not work !!!!! I stitched on 4.1.1, there is no effect, I will continue to conjure. Try 1.0.3 as in posts, then plum conder. According to the results accomplish your goal.

Posted 09/07/2016 09:28:

EVIL386 @ 08/23/2016, 11:58

Hello!

Year 4 worked the tablet, then stopped charging. Disassembled, threw out swollen batteries, replaced with new ones. The tablet is charging, but when you pull out the plug of the power supply goes out and does not turn on. After connecting the power supply and re-switching on - again 0%. There is a symptom in the cap, but there is no cure. Poke, please.

I answered you on akb.

[EVIL386]

[email protected], 12:25

First you need to measure the voltage on akbshkah, should be no less than 7 volts, it is desirable. If there are none, then you need to charge from the power supply unit otherwise they will not be charged. If there is voltage, etc. Everything is normal, you need to transfer the controller from the old acb (shawl) to a new one. We always transfer because 80% of problems with charging new acb on Chinese tablets are dispelled

Hello!
Thanks for the unexpected reply!

The assembly was unsoldered and on imax b6 charged to the maximum. The voltage is close. To balance the assembly of two batteries, the lace is not = (Ie, all the board from the old pick up and to the new battery solder? Ok, I'll try.

After charging and “leveling” the voltage, the tablet also turns on only with a charge. But without charging it does not turn off. It does not respond to the on button, charging continues while charging is connected. Some kind of game.

[mmalkk]

This is not a game, this is a Chinese tablet;) my cockroaches are mine, but it works!

[Ilnarfm]

all my dead does not turn on

[m2545519]

Tell me what could be the problem? The volume and power buttons broke off the board, I rewired them to new ones, the buttons work, the volume slider when pressed appears and runs as it should be, the power also works, BUT the sound disappeared altogether, it is not on the contacts on the board or in the headphones. What could happen if I could damage anything when soldering? Before that, the sound was, I tried to flash it, but the sound did not appear, apparently the problem is in the hardware. Where to look, what to check?

[Ilnarfm]

m2545519check through bluetooth. And HDMI.

[intersend]

Recommend where to dig - the power on the tablet is external 12V, the power on the battery is 7.6V, when the external battery is supplied to the battery 7.8-8V
Does not turn on, does not give signs of life

Details - the tablet lived for a long time in disassembled form (without a back cover), external power supply from the PSU was soldered to the board, the battery was replaced with an assembly of two batteries from the phones (enough for about 20 minutes, but the tablet was turned on all the time, not critical).
Minus external power supply came off and one of the batteries swelled up - everything was soldered, the battery assembly was replaced, the tablet does not turn on :(

[intersend]

Razval74 @ 06/23/13, 16:01

First you need to charge the battery to at least 3.7v per bank and reset its controller

I met the phrase "reset the battery controller" several times. How to do it?

[m2545519]

Ilnarfm
I checked the column through the bluetooth, there is sound, apparently I hooked something when soldering, but what exactly? Visually, everything is fine on the board.

[Bulat170399]

There is a cube u30gt v15s tablet, it has long been gathering dust on the shelf, something with a card, a flash is blinking, and on the forum and those the center did not find the reason, but most likely the processor would like to sell for parts in full or in parts: matrix, batteries, touch, fee, etc. Photos naturally skin.
There is also a v15 donor, bought when I didn’t know about compatibility, there is a board and a touch, the board’s performance is not known
Write to.

[4eJIaYk_naBeK]

Hello everyone, help solve the problem. When working, it turns itself off, you put it on charging - it turns on, and then the same story :( from the power supply and from the battery, an arbitrary shutdown

[zdorovtsev70]

Does anyone have a working motherboard for sale? The tablet from the first all got stuck but like the w version.

Post has been editedzdorovtsev70 - 18.09.17, 17:50

[budmo]

Good afternoon \ evening.
Tell me - remember something about the modelU30GT-H?
How to check the power controller, etc.?

1. batteries go into protection (the controller on the battery itself cuts off after discharge);
2. The tablet works from charging or from batteries charged outside the tablet;
3. 1.8v battery comes (when connected to the \\).
4. on the 11th legHB6298B1.54 in. (and how much should be and what else to check, what would accurately determine the malfunction, maybe not the controller died, but some element of the circuit - a resistor, for example).
5. all diodes work


P.S. And the tablet writes (in the settings, about the battery) that the discharge is not known (that is, it does not show what and what the costs were).

Thanks in advance for your reply.

Post has been editedbudmo - 11.01.18, 22:44

[TimurZ]

valera100500, similarly with me. Have you solved the problem or already have a tablet in a dump?

Post has been editedTimurZ - 24.10.18, 16:05

[gangubasus]

Budmo @ 11.26.17, 21:35

Valera100500, similarly with me. Have you solved the problem or already have a tablet in a dump?

Measure the resistance R15 (labeled R100), with the battery sealed off, how many ohms?