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Laptop is like new with only 17 cycles. Shuts off randomly, does not restart on its own. No report.
completely clean and untouched.
Do these have any mosfet issue?
So another new battery and both boards booted no problem. Strangely, I put them back in their original cases and they worked with those batteries now.
The trackpad threw me off with these. That and I had to go through 3 ‘good’ batteries to make it work.
Used u7420 from 00928.. from the schematic I thought they were the same but the lettering on the chip is different.
820-01814 - SIC532 BE
820-00928 - SIC535 AF
I used schematic for 820-01041. Which says SIC535.
Liquid damage near u7420. Board had a short prior to replacing u7420. Replaced and all seemed good.
When booting it gets half way, the fans spin up fast and it restarts. In safe mode it boots fine. Attaching panic report.
Same after restoring.
I have two of these boards now with the same issues. They crash about 25% into booting. If trackpad is disconnected they will boot fine.
tried both in good cases and they still fail to boot.
Ive seen older posts about this but they weren’t resolved.
Received from someone that attempted to remove EFI lock with a Chip Card. Worked prior but didn't work after install.
Q3730 was knocked off and has been replaced.
ppbus_g3h - 13v
Good until pp3v3_s4 and pp5v_s4 - 0v. No short. (same before q3730 replaced).
p3v3_sus - 3.4v
r7020 - 20v...