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Macbook A2337 Amp Meter Rebooting
- Thread starter Instafixx
- Start date
Compare diode mode readings between both ports.
There must be a problem on USB-C area.
Both ports must have the same behavior.
I don't see any UF400/500 LDO reading posted.
Also compare CC1/2 lines.
Both ports must have the same behavior.
I don't see any UF400/500 LDO reading posted.
Also compare CC1/2 lines.
One CD3217 chip may be bad.
You can also try flashing UF260.
You can also try flashing UF260.
Injecting 1V where?
Did you try reflashing UF260?
Replace with one from similar board, if available.
Did you try reflashing UF260?
Replace with one from similar board, if available.
There is no short, just lower resistance than expected.
Injecting 1V into 0.280 doesn't help at all.
Reflash UF260, if you have correct dump.
Or replace it, if you can get one from same model board.
Make backup anyway.
Injecting 1V into 0.280 doesn't help at all.
Reflash UF260, if you have correct dump.
Or replace it, if you can get one from same model board.
Make backup anyway.
I just saw 0.280 as normal reading at 1V25_S2.
You still have problems with one charging port.
Doesn't necessarily mean a bad CD3217 chip; may be a simple corroded resistor, or trace.
You still have problems with one charging port.
Doesn't necessarily mean a bad CD3217 chip; may be a simple corroded resistor, or trace.
Check diode mode readings on all available components surrounding CD3217 chips.
Also compare on the USB-C connector pins.
Also compare on the USB-C connector pins.
CD3217 chips are very tricky to replace.
logi.wiki
CD3217 and T2 Power on Sequence - LogiWiki
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