Blown fuse and weird things

[Ratari]

Hi here,
i was vaping a 0.07 build just like every day than suddenly the screen went dark and stayed like that.
At home i disassembled the mod and found a blown fuse,
i (poorly) soldered another one in, checked the lipo with a multi ( ~3.8V at all cells) and hooked only the balance connector in for testing with escribe.

something went terribly wrong but i cant find the problem or damage, pls help
and sorry for my english
 

[Ratari]

And other side:
 

[Ratari]

i did the software update and the screen flashed a few times and now it says Warranty service

[VapingBad]

Cell 1 is too low for it to operate properly, I would charge the battery on an external charger if you have one, I doubt there is any risk charging with USB but just don't know 100%.  Then see what it is doing with a charged battery.

[Ratari]

after connecting the plus, minus and the balance connector to the board it showed me 3.18V on cell 1-3 but still won't charge, like i sad, the Lipo is good with the multimeter, something on the board must be not working properly  

[VapingBad]

Maybe a dry solder joint or dirty pin on the balance connector.

[blueridgedog]

Fuse blew and now you believe it reads cell voltages wrong.  What do you actually get with your meter on that pack?  If you are 100% certain the board is measuring the pack wrong and all the connections are solid, then I would open a support ticket to swap it.  I would double check though.