Chosen Solution
when dismantling my console new 3ds xl to change the rubber of the ABXY buttons and to mount it again it did not turn on anything or the blue focus. I notice little damage in the flex that connects the ABXY button board with the motherboard. Is that the problem that does not ignite anything?
It sounds like you did not reconnect everything properly. I have a New 3DS XL here that I’m working on and I’ve noticed that this one doesn’t power up without the battery connected. I’m not sure if the old 3DS XL is the same way, but I’d make sure you have the battery connected when attempting to power it on.
