A1278 not starting and faint/dim light on charger
I have a question regarding a MacBook Pro A1278 from a customer.
The customer said the macbook did not start from one to another day after having the famous big cross at his battery saying it needed to be replaced for months now.
The customer tried different chargers all to no success.
What i have tried:
2 Different chargers, of wich 1 is brandnew.
Old DC-In board does the same as a brand new DC-In board, they both show up (with or without internal battery connected) as a faint/dim green light.
Disconnected everything, swapped memory etc, it keeps faint/dim.
All ram resets possible, nothing.
Now what we do know is that the battery is faulty but even without the battery attached on the logic board it does the same, it shows no life whatsoever in any way possible.
I do feel that there was alot of dust on the bottom side, i cleared it all but but it seemed quite alot. Also, a few screw points seem to be a little brownish, it almost seemed like water spills corrosion but i could not find any white residue anywhere on the logic board itself.
Anyone that might have another idea or will this probably be a logic board that died here?
Thanks in advance!