There are areas of concern on the board. The ones I point to in the image below may not all be bad because I cannot see them all clearly but I would inspect all of them. That said I would redo any areas the look like there are not properly soldered or perhaps hanging on by a thread. You can do this by reflowing and in the case of wires you may need to restrip and make a firm mechanical connection before applying the solder.
Check all of the stuff in red and blue.