TechTablets › Forums › Chuwi Forums › Chuwi Hi10 Discussion › Chuwi Hi10 Pro Bios Voltage unstable
- This topic has 4 replies, 1 voice, and was last updated 4 years, 3 months ago by paolo.
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November 30, 2017 at 9:11 am #75543
Hello, recently after having a tablet with black screen for a few months and then suddenly not even giving a signal i bought the CH341a programmer and flashed the bios, the first file emily sent me was a C109S bios but all over the board i can see C109D on board stick on button cable etc….
So i tried with both C109D she was giving to people with close serial numbers to mine and C109S, the tablet kept giving no signal.
At the moment i don’t know how to test the power button but the voltage over the bios chip is not stable at 1.8V does that indicate a problem with AXP288C voltage regulator?
It is between 1.2V and 1.8V changing very fast .
Can anyone with a table like this check if voltage is stable on bios chip?
My battery fully charges to 4.2+ V .
December 19, 2017 at 1:19 pm #75995Hi, I’m in very similar situation. My Hi10 Pro board is numbering as “6CS2R3 <span style=”line-height: 1.5;”>C109D” and serial number is “HQ64G42170301355″. </span>
<span style=”line-height: 1.5;”>With USB-C type charger, bios chip’s voltage is moving between 0v to 1.3v immediately. Now i’m charging battery with external charger directly and will check it again. However, which bios shall I flash on bios chip??? If anyone have, please send me a message.</span>
January 4, 2018 at 1:07 pm #76432Hi, my problem was solved by flashing correct BIOS again.
At first, battery of my tablet was empty (0V! measured by digital multi meter), so I charged it with external battery charger module.
Next, I asked emily, who is support of Chuwi, to send BIOS file for my Hi10 Pro with serial number on official forum.
http://forum.chuwi.com/thread-2341-66-1.html
Then, flash it on my tablet with external flash writer, according to the tutorial.
At last, I could see Chuwi logo on display again after reboot by long press power button.
In this time, my Android part has broken, so I had to recover it with OS images. (Notice: You have to choose correct image with your serial number)
http://forum.chuwi.com/thread-2341-1-1.html
vizouk, if you want not to throw out your tablet, please try above. Thanks.
November 26, 2019 at 9:41 pm #182129CPU error
January 23, 2020 at 1:59 pm #182553I have the same problem . Please, Can you gently post the Bios link? (my tablet has the serial no. near yours)
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