Don Anton
New member
Hi Louis, Duke, and all the other great people,
I have this 820-00045 board no back light. no liquid damaged but some one has lift the lcd connector and came as no backlight. How ever I replaced the LCD connector still no back light but I can see the background witha light.
I check voltages and PPVOUT_S0_LCDBKLT is 0.4v but some times 0v
u7701 pin 9/10 get 8.66v and 8.67v from the current sense .
EDP_BKLT_EN IS 3.4V
I2C_BKLT_SCL 5V ON PIN 15
I2C_BKLT_SDA 5V ON PIN 16.
Q7706 not opening the gate and send power on pin 6,5,2,1 as BKLT_SD is 8.6v. I checked R7702 AND R7701 both accurate.
Is this becoz of LCD connector? any clue?
I have this 820-00045 board no back light. no liquid damaged but some one has lift the lcd connector and came as no backlight. How ever I replaced the LCD connector still no back light but I can see the background witha light.
I check voltages and PPVOUT_S0_LCDBKLT is 0.4v but some times 0v
u7701 pin 9/10 get 8.66v and 8.67v from the current sense .
EDP_BKLT_EN IS 3.4V
I2C_BKLT_SCL 5V ON PIN 15
I2C_BKLT_SDA 5V ON PIN 16.
Q7706 not opening the gate and send power on pin 6,5,2,1 as BKLT_SD is 8.6v. I checked R7702 AND R7701 both accurate.
Is this becoz of LCD connector? any clue?