I've got this board to repair, it is intermittent to boot. If you leave it without power for about a week then it will boot first time but not again unless you leave it. It really needs a few days, overnight is not enough for it to reset!!!
I've reflashed the bios with the latest .bin by removing the IC, but get the same result as with the original BIOS.
I noted that when I attach power for the first time after leaving the board unpowered I get 7 white flashes on the charge LED (no battery attached, literally the motherboard with some RAM on the bench, connected to an external monitor) and the board will boot. The next time I apply power the I get a rapid orange LED but no booting and then after that I get a solid orange LED but no booting.
I have confirmed that the power button is switching from 3V3 to 0V and the charger output (no battery) is 12.5V.
Could it be the KBC IC? I've no idea where to start on this?!
I've reflashed the bios with the latest .bin by removing the IC, but get the same result as with the original BIOS.
I noted that when I attach power for the first time after leaving the board unpowered I get 7 white flashes on the charge LED (no battery attached, literally the motherboard with some RAM on the bench, connected to an external monitor) and the board will boot. The next time I apply power the I get a rapid orange LED but no booting and then after that I get a solid orange LED but no booting.
I have confirmed that the power button is switching from 3V3 to 0V and the charger output (no battery) is 12.5V.
Could it be the KBC IC? I've no idea where to start on this?!
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