Chosen Solution
I just replaced the logic board. The macine will only boot up on the battery, and there is no keyboard control, or back light. Can not charge machine with wall charger, even though I get a green light on the charger. I was thinking about the left I/O board, but don’t understand why the keyboard won’t funtion when its pluged into the logic board, and there is enough power on the logic board to boot the macine, and run the screen. Does anyone have a sugjestion as I would should try next? Should the keyboard be working?
First thing’s first, you should check and double-check your connections. More than anything, these issues sound like connection problems to me. You may even want to reinstall the logic board again just to go back and check all of your connectors. It’s really easy to accidentally incorrectly seat a connector and it can cause all the grief. I’ve done the same where I’ve lost response from the keyboard merely because I failed to connect its cable completely.
