I am working on a lenovo nm-a311 motherboard. It came with a short on the CPU_GFX_VIN line, repair change a capacitor and a mosfet. I have the problem that I prede with the battery but it does not activate the screen, then I put the charger and the screen is activated and it turns on normally. But it does not charge while it is on, only when it is turned off. When it goes into sleep mode and it is battery-only it does not reactivate, I must put the charger and then it reactivates. I have reviewed the lines to the EC with the PU301. But I have doubt with the line + 3VALW. Any ideas. thks.
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Re: ACLU9 / ACLU0 NM-A311 Does not start with battery
@karlox, you have mentioned absolutely nothing. Where are the voltage measurements at PQ301/302?? Or what you have measured at PU301 charger IC?? Without these basic inputs how one can help you. Please remember, the better is your description, the brighter are your chances of getting help as nobody wants to waste time on incomplete info. -
Re: ACLU9 / ACLU0 NM-A311 Does not start with battery
Known good AC adapter with correct power rating and known good battery?OpenBoardView — https://github.com/OpenBoardView/OpenBoardViewComment
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