Hi All,
Just wanted to see if I can get some advice on this 3437 I'm working on. It had extreme corrosion around the SSD and airport (WIFI) area. C3740 has both pads removed due to the corrosion, as R3742 and both sides are reading ground as I tried to revive the right pad and dug straight to gnd.
ISL was not pulling pin 1 to ground. Found R7105 was blown replaced it but ISL was still not pulling pin 1 to gnd. Replaced the ISL and that finally resolved that issue.
PP5VS5 was present as was PMSLP_S4L. Came back the next day and now the ISL is getting extremely hot when powering on. All the surrounding components seem fine. Noted down all the lines that go from the ISL but not surrounding components and started at pin 24 CHGR_UGATE which goes to Q7130. Checked pin 1 and it was reading 1 ohm. Checked my donor board and that was in the millions of ohm. Removed Q7130 but now it is still reading 1 ohm on pin 1. There aren't any other components on CHGR_UGATE. I'm going to continue down the list of rails that go from the ISL far away, but what else should I check for on CHGR_UGATE since according to my donor it's suppose to be far far from 1 ohm.
Thanks for your assistance!
Just wanted to see if I can get some advice on this 3437 I'm working on. It had extreme corrosion around the SSD and airport (WIFI) area. C3740 has both pads removed due to the corrosion, as R3742 and both sides are reading ground as I tried to revive the right pad and dug straight to gnd.
ISL was not pulling pin 1 to ground. Found R7105 was blown replaced it but ISL was still not pulling pin 1 to gnd. Replaced the ISL and that finally resolved that issue.
PP5VS5 was present as was PMSLP_S4L. Came back the next day and now the ISL is getting extremely hot when powering on. All the surrounding components seem fine. Noted down all the lines that go from the ISL but not surrounding components and started at pin 24 CHGR_UGATE which goes to Q7130. Checked pin 1 and it was reading 1 ohm. Checked my donor board and that was in the millions of ohm. Removed Q7130 but now it is still reading 1 ohm on pin 1. There aren't any other components on CHGR_UGATE. I'm going to continue down the list of rails that go from the ISL far away, but what else should I check for on CHGR_UGATE since according to my donor it's suppose to be far far from 1 ohm.
Thanks for your assistance!
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