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A2681 Air with USB-C data line issue (820-02536)

S

sekidata

Member
This 820-02536 came in with 2 of 3 CD3217s shorted. I replaced all 3 CD3217s from a donor board, along with the 2 TBT ROM chips (U5560, UF260). Now the machine is fully functional except for the data line on USB port 1. Charging works on this port and it provides external 5V, just does not mount external drives.

I already replaced UF100 from the same donor board but no change.

Any other diagnostic I can perform before I give up on this port?
 
Last edited:
S

sekidata

Member
Diode mode readings are identical between the two USB ports.

I forgot to mention that along with the three CD3217s, I had to replace UF650 due to a short on PP3V3_S2_LDO.
 
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