So I bought a broken 3DS for $20 and figured I could fix it because I heard you just have to replace the Speakers or Camera, so I bought both. I put both of the new parts in but I still got a pop with a flash of the bottom screen. What else can cause this issue? Could I check the whats wrong with a multi meter? Would have bought a new 3DS but didn't have the money, just want to play Majora's mask lol.