You definitely have some more work to do. Pretty much can follow the corrosion from the bottom left and right battery pack holder holes and see the damage from there that spread up the traces and also and fumes that got to the resistor leads that are marked off. Picture does not have good light on it, so there could be some another area that I can't see affected. Could even use other pictures from other angles. Hard to really tell if L1 and C32 were affected. Some of the resistors I marked off on the right may not be damaged, just might be the way the light hit the area.
Basically, if the solder joint and solder leads are not shiny, need to suspect it for having battery corrosion. Magnifying glass is your friend for closer examination.
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