Recent content by 2informaticos

I said to remove for test. Did you place them back?

Why did you inject voltage there? Did you check its enable first? If a power rail is not enabled, you will find 0V. 1V8/3V3/5V_G3S are all in G3S state. Did you search only for 5V_G3S? G3S is controlled by T2; its power on sequence breaks for some reason. I suspect broken traces, or solders...

Sometime sudden death is caused by bad NANDs. Check if SSD gets correct voltages at least.

PCIE lines go directly to PCH. Be sure C3430/1 are in place.

8.4V without battery connected?

Still stuck at 5V if you connect a charged battery? Did you also test the board alone, disconnecting all accessories, apart of charger?

Thank you for the feedback. I'm pretty sure this will save time for other members.

Did you isolate any line/pad on J3400? Be sure to have good contacts there.

Check all RC322-6 and their traces.

Check PPBUS_AON and 3V8_AON. If both present and stable, check U8100 & U7700 LDOs.

I meant to check on that power rail (LDO), where you've said to have lower reading than expected.

Did you check diode mode once U2890 was removed? Each chip has a filter cap near the power pin.

If S5 LED goes off, test replacing Q8110.

Not sure which chip may be involved only with this issue. Sometime bad flex can cause such problem; you've said already tested. https://boards.rossmanngroup.com/threads/macbook-air-m2-a2681-touchpad-keyboard-issue-lid.64702/ One friend mentioned he directly changed all small chips related with...

Check if board starts with airport connected and just one RAM module inserted.