820-3476-a no back light, water damage.

[Dewanbd]

Turn on and chime with display logo but no back light. LCD connector was corroded chance it and light back in normal.After 10 minutes testing again no back light and no display. With LCD CONNECTED
1. PPVOUT_S0_LCDBKLT=0v, I2C_BKLT_SCL=5v, I2C_BKLT_SDA=5v, LCD_IRQ_L=3.3v, SMBUS_SMC_0_S0_SDA=3.3v, LCD_HPD_CONN=0v.
Need help, Thanks in advance.

 

[aprendiz]

Try another lcd assembly, could be a bad LCD cable too..

 

[Dewanbd]

i have 820-4924 assembly , is it compatible with 820-3476?

 

[dukefawks]

Not 100% sure but the 2015 LCDs do light up on 2014 boards I think. The other way around certainly not!

 

[Dewanbd]

Dont have same screen, is there any other way to check it?

 

[dukefawks]

Nope, get some cracked testing assemblies as you will always need them.