Originally Posted by Chrisrussell
Yoy can really tell but the solder is melted and smells burned.
The board isn't burned but you do have some loose or broken solder joints.
The smell may be coming from the increased resistance due to the solder joints. You'd see char on the board and burned components if it was a major failure.
All is not bad, solder those joints again and see if it works. Poor solder joints are not uncommon in the cheaply constructed "ESE" electronic products.