Chosen Solution
Hi, I’m putting this CB3-431 chromebook together from spare parts and it all works except it won’t charge. I’ve tried 2 different batteries, both could be duff for all I know but the battery_test shows them to be ~97% and 100.5% good (not sure how the latter is possible!) but discharging. It works fine on AC, and did on battery until it went flat as I can’t get it to charge… The charge light comes on but it remains stuck on 1%. I’ve tried all the suggested things I can find for this: Hard Reset Disconnecting the battery and plugging in AC for 5 mins. (the charge light flashes but never goes red, but this may refer to a different model) Esc-Refresh-Power to get to recovery and charging from there for 12h. There looked to be a slight corrosion on some bits on the board (now cleaned), so maybe if it has been water damaged, I don’t stand a chance? Some places have suggested a bad power supply but I’m thinking as it is a 2 pin connector, if it powers on then that must be OK? Any thoughts and/or advice appreciated!
The physical port on your motherboard could be defective. Loose contacts can be causing your issue.