Macbook Pro 15 2015 820-00426 No PP5VR3V3_SW_LCD_UF

**MobileXT** · 03-10-2021, 09:18 PM

I'm working on a Macbook Pro 15 2015 that has no liquid damage on it. The board power on without post, no chime , black screen. I check the Voltage on L8300 and I have 0.0V nothing. I also check U8300 I have 5V on PIN 1 but missing LCD_5V_EN on PIN2 0V. Is not detecting the LCD screen. Any help greatly appreciated.

**MobileXT** · 03-11-2021, 02:56 AM

Update:

I get it to chime but no video and backlight. I already replaced U8300 and same issue no video.

03-10-2021, 09:18 PM	#1
MobileXT Senior Member Join Date: Oct 2012 City & State: USA My Country: USA I'm a: Knowledge Seeker Posts: 174	Macbook Pro 15 2015 820-00426 No PP5VR3V3_SW_LCD_UF I'm working on a Macbook Pro 15 2015 that has no liquid damage on it. The board power on without post, no chime , black screen. I check the Voltage on L8300 and I have 0.0V nothing. I also check U8300 I have 5V on PIN 1 but missing LCD_5V_EN on PIN2 0V. Is not detecting the LCD screen. Any help greatly appreciated. Last edited by MobileXT; 03-10-2021 at 09:19 PM..

03-11-2021, 02:56 AM	#2
MobileXT Senior Member Join Date: Oct 2012 City & State: USA My Country: USA I'm a: Knowledge Seeker Posts: 174	Re: Macbook Pro 15 2015 820-00426 No PP5VR3V3_SW_LCD_UF Update: I get it to chime but no video and backlight. I already replaced U8300 and same issue no video.

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