ISDT BattGo BG-8S Battery Meter

[Pionex2020]

Hi, Can anyone help me with the correct way to disassemble the ISDT BattGo BG-8S Battery Meter.
The issue I am trying to correct is a voltage reading on cell 7 whether there is something connected to it or not.

 

[Pionex2020]

Hi, I got the device opened and repaired. I saw a video on youtube of the disassembly of a different model (ISDT Q8) made by the same company, so I took the risk and got it opened without any damage. I found a faulty regulator and diode, replaced both and its now working like it should.
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