[SOLVED] Being defeated by an ISL replacement on an 820-3787

[bjf]

The computer was working fine and then one of the charging data lines was shorted by corrosion on the battery connector that a tech didn't notice. The battery actually worked for a while then failed. The ISL was damaged and shorted internally by it. The computer still worked but didn't recognize the battery anymore. I replaced the chip and now get around 5V on PPBUS. Magsafe is on. 3V42 line is fine. I tried another ISL chip with the same result. I've check all the pins. Everything is good. Both sets of current sense lines are measuring fine. I'm thoroughly baffled. Any ideas?

 

[dukefawks]

Bad soldering, bad ISL, knocked off component? The board should still power on from a charged battery without the ISL6259. Do not connect a charger with the ISL removed.
Check resistance between pins 17/18 27/28 and R7105?
Also big chance the SMC is dead, usually when the ISL dies the SMC goes too. Green/orange light still present?

 

[bjf]

Bad soldering. My soldering iron tip was dying. I grabbed another one and put the ISL on fine. Thanks.