*New* Nintendo 3DS XL no turning on

I was wondering if you could give me an idea as to how to fix my New 3DS XL. My son unfortunately got water in the top screen area and now it doesn’t turn on. I took it apart and couldn’t see any water damage and gave it a clean with isopropyl. The blue light turns on for maybe 5secs and then just turns off again, orange light shows when on charger, I’ve tried a known working battery and no change. I did read something once about if the ribbon cable to the top screen gets damaged from the water it wont turn on but i cant find the page again.
Any thoughts (i do have a new top screen on the way but it wont be here for another couple of weeks) ?
Thanks in advance :slight_smile: