blue light then popping noise

Hi,

I brought a faulty 2ds thinking it'd be an easy fix.

I opened it up, checked all the ribbons and they all seem well seated, tried the wifi card & I still get the pop noise.

I looked at the screens with some light & they appear to have some cracks, I haven't taken the motherboard off yet.

Any ideas on how to fix it?

Also, on opening the gate on the home button ribbon I pulled off the grey gate, should it operate fine without it?

Thanks.