How to disassemble this power cable?

[cheonmu]

Hi,

I am using soundcraft`s Spirits live 4 mixer.

This mixer is very older and i want to reconnect power cable but i can't disassemble this.

Please let me know how do i that.

Thank you.

 

[Addicted to hifi]

Welcome cheonmu to wbf.

 

[Addicted to hifi]

I would take it to a technician to have a look at it.