Looks like battery corrosion. I have not attempted to open or repair these. None of them are switching on.
3 x Nintendo Wii U Black 32GB Console - Faulty - Power Up Issues
Nintendo Ds Lite Consoles 3 X Faulty Spares/Repairs All In Need Of Repair
3 x Microsoft Xbox One 500GB Home Consoles Only Fat Black Model 1540 - Faulty
3 X PS4 CONSOLES FAULTY SPARES OR REPAIR SONY PLAYSTATION 4
Nintendo Wii Console Bundle – Boxed – Fully Working Console – Faulty Wii Remote
Nintendo Wii 1x Console 4 x nunchuck 3 x controller 1 x sensor bar -untested-
