LENOVO 300-14IBR BMWC1 BMWC2 NM-A471 REV_2.0
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any one have this? board view plsss tnx....badly needed12-28-2023, 07:29 PM -
Hello, I've been struggling with this one today. I'm troubleshooting a Lenovo 300-15IBR (board BMWC1/BMWC2 NM-A471) that turns on the power LED and does a bit of fan spin but nothing else. 3v3sb and 5vsb present, no 1.05v, no 1.35vddr, no vcore, no 1.8vsb.
BIOS has been reflashed with one I found here, supposedly tested OK by someone else. I don't have an EC programmer unfortunately.
I looked around and SYSON is 0v, SUSP# is 0v too. Forcing them to 3v3 enables the 1.35v rail, but the 1.05v and 1.8v rails are still missing (generated by PU704). EN_1P05A signal is 3.3v, and IN_1P05A... -
Lenovo Ideapad 300-15 bios needed
BMWC1 / BMWC2 NM-A471
Rev : 2.0
Thanks In Advance
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