How to open the case of Alba STB8 ?

Hi, i have undone the back screw, but the case seems as if there are other possibly hidden screws etc that i need to access before it will open. I got home today and found the front LED unlit. I replaced the mains fuse, but it's still not working.

I know it's not the latest model, but as i am not working at the moment, i really need to save every penny. I have experience in electronics, so would like to try and salvage it, if possible.

Hoping someone can help me out.

Thanks