Just thought it might be useful for someone with an example of how broken traces on a circuit board looks. Especially those who are new to these kind of things.
Below is an example of broken traces at the U13 chip from a WPC CPU Board. I held it against a lamp to make it easier to see. Found them when I was trouble shooting the board. One can also see how someone soldered at the pins of the U13 chip as compared to the untouched pins of U12 on the top. The reason for the broken traces I don't know but I think that maybe they replaced the U13 chip and used a bit too hot soldering iron that wekened the traces.