bighead
New member
Hi,
This board is liquid damaged.
Corrosion around:
- JTAG(I already removed it).
- Backlight IC - removed
- U1900 - changed
- Q5480 - changed
I've green and orange light.
PPBUS_G3H - 12.57V
PP3V3_S5 - 3.3V
P5V1 - 5.1V
PP3V3_SUS - 0V
PM_RSMRST_L - 0V
PM_SYSRST_L - 0V
PPVRTC_G3H to PCH good.
Checked R1300/1/2/3 all seems good.
One weird thing I noticed.
U1900 PCH_CLK32K_RTCX1 goes extremly high around 3.3-3.6V.
I can see the wave form. However not that nice like on different boards.
I replaced SMC I thought that cause the PM_SYSRST_L not going high.
There is no short on this line. Dead PCH?
Thank you.
This board is liquid damaged.
Corrosion around:
- JTAG(I already removed it).
- Backlight IC - removed
- U1900 - changed
- Q5480 - changed
I've green and orange light.
PPBUS_G3H - 12.57V
PP3V3_S5 - 3.3V
P5V1 - 5.1V
PP3V3_SUS - 0V
PM_RSMRST_L - 0V
PM_SYSRST_L - 0V
PPVRTC_G3H to PCH good.
Checked R1300/1/2/3 all seems good.
One weird thing I noticed.
U1900 PCH_CLK32K_RTCX1 goes extremly high around 3.3-3.6V.
I can see the wave form. However not that nice like on different boards.
I replaced SMC I thought that cause the PM_SYSRST_L not going high.
There is no short on this line. Dead PCH?
Thank you.
Last edited: