Alchemist nemesis ADP22a - main power supply fuse

[Abonam]

Hello,

I have the Alchemist ADP22a solid state amp, it is currently wired for 220V.
I opened the chassis and found out a switch 220/110 to change the main power supply operating voltage.
I think I have to change the fuse because the original main fuse was designed for 220V, however, I am struggling opening the fuse socket.
I know this is a quite "newbie" question, but I do not want to scratch or ruin the original fuse socket.

Any input/feedback regarding how to open the fuse socket without damaging it?

Thank you in advance for your help!!!

 

[century tek]

Got any pics? I'm not familiar with your machine but someone else here might have one and chime in to tell you how the fuse socket works.

 

[Abonam]

Hello Century Tek, thank you for your advice. I added a pic with the detail of the socket.
It looks pretty standard to me...but I am not able to open it! :-(
Once again, thank you in advance for your help!