

Is this board cooked?
Tried to replace the switches on my mouse. But when I went to de-solder it, the solder wouldn't melt. Before I take it to a professional to have it done properly, I need to know if the board is still functional.
I'm not sure what it looked like before but the lines look kind of dark but only in certain parts of the board and I'm not sure if that's normal.
TLDR: For those who solder electronics, does the board look cooked to you?