Tablet PC startup problem???

Question

Iron

Hello guys
, such a problem, in general, an interesting case.
They brought me this ARCHOS 101 NEON tablet
, they say it came from Germany
with a swollen battery,
I took it apart, I
look at it on the controller 2 batteries are connected, 2500 ma, 3.7 V. and 5000 ma 3.7V,
and what was swollen soldered , left the other visually the whole
then measured the voltage: 2.9 V
called the port microusb towards the battery everything is fine,
put the
red light on the PC from the PC,
then after 10 minutes tried to turn on
the tablet it started but only with the charging indicator (pashol process)
disconnected the cable after 20 minutes
tried to turn on the device
and it hung on the screensaver
, went into the menu recovery,
wanted to reset it, but
in the process of clearing the cache, it turned off
now it doesn’t turn on and it doesn’t get
infected, the power circuit + and - micro usb sockets, call briefly
what do you think, what’s the matter, somewhere short
or the second Akum also covered himself
how to check what to do next, any thoughts ????

Answer 1

By the way, now Akum shows 3.9 V