My old 27" screen died, i think i just found the guilty part. What you think ? I must identiy the RKM22 part and the resistor...

@hakunamenta I don't think it's flux because it's dry. It is the only part of the board with this kind of brown / yellow smudges. (i take a larger picture)


@dervishe rosin based flux is very hard when dry. maybe its that? just trying to understand if the brown stuff is part of the problem or not.

I'm trying too. I'm a noob at this game and i take this excuse (the failure of the screen) to learn some new knowledge :)

@dervishe what i would try if it was my screen, is cleaning the brown stuff away with a cloth and rubbing alcohol.
maybe that wont fix it but then the parts are more visible.

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