820-01598 No image - Turning on - Liquid Damage

I am looking at an 820-01598 which works almost perfectly.

Sadly the screen is not detected, nothing on the LCD and no backlight. Works when connected to an external.

I have cleaned the board off and can see no damage to traces/components. The backlight IC looks clean.

Attached are some pre-clean photos for reference.

It would be great to know what I should look for to determine what is preventing the LCD from enabling.

Thanks!
 

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2informaticos

Administrator
Staff member
Inspect J8500 for liquid sign.
Check diode mode to ground on EDP data lines.

Do you get 3V3/5V_S0SW_LCD, at least in the first few seconds (when chime)?
 
There were signs of corrosion on the LCD cable connector.

I didn't get 3V3/5V_S0SW_LCD even momentarily.

Unfortunately or fortunately the customer contacted their insurance company and collected the laptop.

Case closed, thank you for the assistance.
 
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