Hello.
If you can help with this one please...The laptop does 8 beeps at boot which as I see is LCD error. The laptop shows image to external monitor normally. New screen flex and screen does not change anything.
So I took measurements in the LCD socket (LCD1):
DCBATOUT_LCD 19V
LCDVDD_LCD 3.3V
DBC_EN_R 0V
EDP_HPD_CONN 3.2V
LCD_TST_C 0V
EDP_AUX 3V
EDP_AUX# 0V
EDP_TX0# 0V
EDP_TX0 0V
EDP_TX1# 0V
EDP_TX1 0V
LCD_BRIGHTNESS 0V
BLON_OUT_C 0V
PANEL_SIZE_ID_CONN 0V
The ones that are 0v, what voltage should they have?
I have also checked the near area resistors and stuff and they measure ok, but it would help if I knew exactly the correct voltages.
Motherboard is LA-B843P REV1.0
Screen is LP156WHB TP A2 EDP 30PIN.
Please find attached schematic and LCD1 socket Screenshot.
Thank you in advance.
If you can help with this one please...The laptop does 8 beeps at boot which as I see is LCD error. The laptop shows image to external monitor normally. New screen flex and screen does not change anything.
So I took measurements in the LCD socket (LCD1):
DCBATOUT_LCD 19V
LCDVDD_LCD 3.3V
DBC_EN_R 0V
EDP_HPD_CONN 3.2V
LCD_TST_C 0V
EDP_AUX 3V
EDP_AUX# 0V
EDP_TX0# 0V
EDP_TX0 0V
EDP_TX1# 0V
EDP_TX1 0V
LCD_BRIGHTNESS 0V
BLON_OUT_C 0V
PANEL_SIZE_ID_CONN 0V
The ones that are 0v, what voltage should they have?
I have also checked the near area resistors and stuff and they measure ok, but it would help if I knew exactly the correct voltages.
Motherboard is LA-B843P REV1.0
Screen is LP156WHB TP A2 EDP 30PIN.
Please find attached schematic and LCD1 socket Screenshot.
Thank you in advance.
Attached Files
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