Chosen Solution

so while repairing, i accidentally took the battery out while it was still on and it wont turn on anymore. Even with the charger plug in, it wont turn on. Only orange light and no blue light at all, no blinking, no nothing

I think yo may have bricked it. Dont own a CTR-001 3DS though.

Start by testing the battery with a multimeter to see if its dead, also clean the battery contacts and make sure nothings damaged