[SOLVED] 820-0165 SYS_ONEWIRE voltage dropping down

[bjf]

This board will work fine but the MagSafe light goes off often. The SYS_ONEWIRE will go between 3.3V and 1.3V. J9500 was slightly damaged. After cleaning it, things got a lot better but it will still drop down fairly regularly. If SYS_ONEWIRE is not completing its circuit through J9500 would that cause the voltage to drop like that? Not sure what else it could be.

 

[dukefawks]

The usual, good IO board and flex cable? Possible corrosion under J9500.

 

[bjf]

Sorry, I left that out, known-good IO board and cable always. I'm trying everything I can to avoid replacing or pulling J9500 but apparently that's my future.

 

[dukefawks]

Yup J9500 is probably the problem.

 

[bjf]

I pulled the shield off of J9500 and was able to fix up the solder points. Nothing looked bad but it's working fine now. Thanks.