820-3115 no image

Kyle93

Member
Arrived with liquid damage. After replacing components board boots and chimes but no image or backlight. PP3V3_LCDVDD_SW 0V. Replaced U9000 but 0v on pin 1 LCD_IG_PWR_EN. L9080 L9004 L9008 are good

Bad PCH?
 

2informaticos

Administrator
Staff member
LCD must be first correctly recognized.
Check L9008, R9008/09 and their traces.
Also check voltage and diode mode to ground on CLK/DATA lines.
 

2informaticos

Administrator
Staff member
I was talking about their values (between pins), not to ground.
You post now some readings w/o specifying which pins of the components tested.
 
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