Hey, Try to check the amp when you charge the switch, if it is 0.40 this is normal slow charging. If it is around 1.75 it is fast charging. So if you connect the switch and after a minute it didn't switch from 0.4 to 1.75 there is a problem. Check any liquid damage, search for corrosion and check the tiny sticker, if it is pink there are liquid damage. Check if any capacitors is shorted, check the fuse and the chip on the right of the USB charge port when it face you. In the case on of the capacitor is shorted you will need to replace the ship.