akademik_by ,
Well, there are no Kashpirovskys and Guddini here, therefore I will assume that I ate akb .. it is possible that PMC took it with me. batteries from different state farms of the Middle Kingdom and chose the best ... however there is still an autopsy quest .. People break the screens judging by youtube only on the way .. I really have personal feedback statistics. shorter
Something like that

And do not make it difficult to throw links to what? I only found such numbersAli.


Got to the battery. Disconnected connectors. Something I'm confused, on what voltage to shoot? (white-red-red) and (white-black-black).

akademik_by red plus black minus

(white-red-red) and (white-black-black).
1 2 3 4 5 6

2+ and 4- = 3.7V
2+ and 5- (2+ and 6-) = 3.8V

Similarly with red (3)
3+ and 4- = 3.7V
3+ and 5- (3+ and 6-) = 3.8V

What then show red 2 and 3 with white 4?

And if the tablet through charging took charge on both 5V and 9V with a smooth decrease in current to 400mA and 200mA, respectively, then we can assume that the battery is alive? And look for the cause of the indicator not working and not turning on the tablet further on the board?

Post has been editedakademik_by - 14.06.19, 13:01

akademik_by , that is, the elements have quite adequate potential .. and if you leave to charge for a day (suppose) with monitoring and until the power is reduced to 0 milliampere? The voltage should be about 4.22-4.35 ... is there such a thing? But overall, 3.8 is quite ..

Hallelujah!
Some text that did and then output)

I decided to connect the power through the USB with the battery disconnected. The indicator has started to blink, so I think the tablet is alive. Consumption when the indicator is on 100mA, when off - 230mA. Then I connect the display and the battery. I supply power to the tablet: the same thing, only the illumination of the backlight and the white screen were added (trying to start and go out). After 5 seconds, the indicator lights up again and starts the screen, then it goes dead, and so on in a circle.
A double feeling, the tablet seems to be livening up, shows signs, but it does not start.
Again, I remove the contacts of the battery and apply power to the tablet. No changes. Then I connect the battery and apply power, now the diodes and the screen do not react, but the tablet began to take the current more amperes. Now all the ends are reduced to wires and connectors. The connectors sit tightly, I began to move the wires (the power to usb was connected) and at some point the screen caught fire and did not go out, it showed the battery charge level of 51%. Disconnected charging and pressed the power button. The tablet has loaded. Connected charging: switched to 9V with a consumption of 1.5A.
That's all.

The result: a working tablet on a stand without nat. exposure just went out. I did not react to the power button and did not blink with indicators, only took charge. After opening (from the tools only part of the packaging from the SD card, transparent flexible plastic, without hair dryers and other blades) visually everything is whole. After manipulating the black wires, everything worked, i.e. left the contact itself? Unclear.
Now we need to look for the battery: firstly, she is already very tired after 4 years of active use, and secondly, the problem with the wiring can remind me of myself.


algussss, I hope to share their proven shops on the battery)

akademik_by , no, most likely the error in the powermanagement controllet was reset and he started without an error .. it is like this ..;) my congratulations!

Ksta, and how to stick the display? Double-sided tape will be thick)

B7000

there are no such }-)

I wanted to change the battery in the service of Cepco, I was immediately warned that the display burst when replaced in 50% of cases, the guarantee is not given for this. I understand this is a problem with the tablet, well, I already read it above. While I took, I think ...
Who will advise what, take the risk?

zevccc , I double-shot the display on two different z4tab and did not break it ..

Brontozaurus
my respect, my arm is full)
In YouTube, I looked, it seems like nothing critical, the screen is cut off and that's it.
I understand when they cut it bends and can break the glass.

zevccc ,
Thank ;)