I’m working on an OLED board that I learned a life lesson from in failing a kamikaze attempt. That said, it turned into a trace repair project and now I’m just looking for some closure in diagnostics.
I repaired the traces by carefully scraping back more of the line that was obliterated from the first attempt. I also removed the emmc to ensure that these lines have connectivity to the correct pads under the chip (they do). I also checked the area for any grounding issues, but all the layers are cleanly separated and I couldn’t find any.
I reballed the emmc and reinstalled it and I’ve got a no-boot issue with
- 15V .40A with the battery installed
- 15V .16A with no battery
I can’t find any shorts anywhere, so I’m suspecting either bad emmc or I killed the apu. I’m looking for help in how to determine either of those or if there’s something else I should be checking. Thank you!