For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
Have a 820-2936 that had water damage in lcd area. Replaced everything affected and now screens turns on but is gray. This is a test lcd so I know that is not the issue.
You still have liquid affected components, or traces.
Did you change LCD connector?
Check all data lines in diode mode to ground and voltage; compare with similar working board.
Be sure L9080 is OK.