ytesfay80
Member
This board had some liquid damaged but not too bad and the LCD connector was butned on pins 3/4 I have removed the connector. I get a green light but it doesn't turn on. When the battery was plugged in the charger light would turn orange so the battery is being recognized
Here is a list of areas that had any liquid damage before I put flux and heated those components. I have not put it in the ultrasonic yet.
q7055
u7201
c7012
l6995 area
j5700 tpad connector
c7050 r7052 area of isl6259
pin 3 u5402
u7870
r5127 area(SPI_ALT_MOSI)
Q9302
q7330/35
u7840
c7012/13 were burned and replaced
I first replaced r7051/52 & C7050 and the pad on Pin 1 of R7051 was gone and there was no continuity from Pin2 of c7050 to Probe 556 so I ran a wire from C7050 to Pin 1 of R7051 & Probe 556.
That still didn't solve the issue so I replaced the ISL6259 and still same issue.
Resistance Pins 17/18 - 2.9ohms Pins 27/28 - 20.8ohms
U7201 had some liquid damage but no components look badly damaged. Here are some voltages of U7201
Pin 23(VIN) - 8.4v
Pin 22(VREG3) - 3.3v
Pin 29(VREG5) - 5.02v
Pin 12 - 0v
Pin 4 - 0v
Pin 21 - 3.51v
R7251 has 0v on both sides.
R7813 also 0v on both sides. (PM_SLP_S4_L)
I shorted the power pads next to the tpad connector and measured SMC_ONOFF_L going down to 0v and it still didn't turn on.
Here is a list of areas that had any liquid damage before I put flux and heated those components. I have not put it in the ultrasonic yet.
q7055
u7201
c7012
l6995 area
j5700 tpad connector
c7050 r7052 area of isl6259
pin 3 u5402
u7870
r5127 area(SPI_ALT_MOSI)
Q9302
q7330/35
u7840
c7012/13 were burned and replaced
I first replaced r7051/52 & C7050 and the pad on Pin 1 of R7051 was gone and there was no continuity from Pin2 of c7050 to Probe 556 so I ran a wire from C7050 to Pin 1 of R7051 & Probe 556.
That still didn't solve the issue so I replaced the ISL6259 and still same issue.
Resistance Pins 17/18 - 2.9ohms Pins 27/28 - 20.8ohms
U7201 had some liquid damage but no components look badly damaged. Here are some voltages of U7201
Pin 23(VIN) - 8.4v
Pin 22(VREG3) - 3.3v
Pin 29(VREG5) - 5.02v
Pin 12 - 0v
Pin 4 - 0v
Pin 21 - 3.51v
R7251 has 0v on both sides.
R7813 also 0v on both sides. (PM_SLP_S4_L)
I shorted the power pads next to the tpad connector and measured SMC_ONOFF_L going down to 0v and it still didn't turn on.
Last edited: