Fix live a broken rotary Laser level

See how I am fixing live a broken rotary Laser level
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[@Ben-sb3yj]

Have the same device, and it seems to be the same issue. Only able to turn on when power supply is connected.
Once turned on, it runs without supply for at least 12h. So I would like to have a look into it.
But my device does not have these 4 screws at the bottom?!
So does anyone know how to open it without destroying it?

[@askhowtube]

Can you attach a picture with the back of it, or tell what model is, because if it doesn’t have those screws in the back, might be a slight difference between them...

[@Ben-sb3yj]

@@askhowtube how to attach pictures here on YT? Could you provide some contact information to get get in contact with you?

[@askhowtube]

Send me a picture at [e-mail].

[@Ben-sb3yj]

Of course there are screws, but only for opening the complete device, but not for the battery case. Finally I got it managed to disassemble the device. It is the power button that is defective. Contacts doesn't switch if pressed down. Verified function of other buttons, they work. It will be easy to get it changed as it is a standard component.
But I still can't see the batteries..

[@romanmateo2566]

i know Im kind of randomly asking but do anybody know of a good site to watch newly released series online?