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Liquid Damage
Liquid was around and down both USB C charging Circuits and controllers
Cleaned area and found 5 burnt traces
Burnt traces
R3351 Burnt PPBUS_G3H pad - Ran jumper to R3451 PPBUS_G3H side and replaced R3351 with new 10K resistor
R3360 Burn via - Cleaned and checked continuity to resistor and output and has continuity
PIN 46/55 of U3100 (TP_NC_UDP_XA_SWD_CLK) Test point burnt off board but BRD shows this goes no where. When Charger plugged in these lines are both 3.3v
PIN 55 of U3200 (TSP_USP_XB_SWD_CLK) Test point burnt off board. Line reads 3.3v when charger is plugged in
PP3v3_G3H is 3.368v
PPBUS_G3H is 5v and cycles 0-5v every few seconds as if there is some type of reset.
U3100 and U3200 were clean when pulled and no burnt pads under the chip or corrosion. Reballed and reinstalled and no change.
I am ordering new ICs but was wondering if Im missing something else since the chips had no signs of liquid under them.
Liquid Damage
Liquid was around and down both USB C charging Circuits and controllers
Cleaned area and found 5 burnt traces
Burnt traces
R3351 Burnt PPBUS_G3H pad - Ran jumper to R3451 PPBUS_G3H side and replaced R3351 with new 10K resistor
R3360 Burn via - Cleaned and checked continuity to resistor and output and has continuity
PIN 46/55 of U3100 (TP_NC_UDP_XA_SWD_CLK) Test point burnt off board but BRD shows this goes no where. When Charger plugged in these lines are both 3.3v
PIN 55 of U3200 (TSP_USP_XB_SWD_CLK) Test point burnt off board. Line reads 3.3v when charger is plugged in
PP3v3_G3H is 3.368v
PPBUS_G3H is 5v and cycles 0-5v every few seconds as if there is some type of reset.
U3100 and U3200 were clean when pulled and no burnt pads under the chip or corrosion. Reballed and reinstalled and no change.
I am ordering new ICs but was wondering if Im missing something else since the chips had no signs of liquid under them.
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