Hi, my 3DS XL had a broken upper screen.Bottom screen and touch were working. I replaced upper screen with new one and I got a black screen with backlight working. Sound is also working. I can use touch screen but I can't see anything. I placed another motherboard (from Japan),and everything works, but I need European motherboard. Fuses are ok (no point checking them, but I checked). Cables are also in place. I guess it won't turn on with loose ribbon cables. I placed them 5 times. Now,I see some people are complaining about BSOD. I tried holding power button with no luck. 3DS is in a normal home screen, when turned on, so it's not stuck in standby. One thing also-this 3DS had a first time run screen. I bypassed it watching on youtube where are the buttons. I can't say which version is it. I was thinking maybe to reflow a CPU/GPU... If someone knows what can I do, that would be great. Thanks.