My drivers side window decided that it didn't want to work anymore, due to the window relay. After paying for another one my Dad had a go at fixing my original one, with success. It turned out to be a dry solder joint, shown in one of the pics. Hopefully these pics will help anyone else with similar problems.
Door card will need to be removed to access the relay and soldiering skills will be needed.
Tools required:
Soldering iron
Solder
Solder Wick( removes old solder when heat is applied)
Couple of flat screw drivers or butter knifes to open relay casing.
This is the relays location behind the door card.
This is the relay.
With the plug end removed.
The offending circuit board from inside top view.
The underside of board, and I've high lighted the offending solder.
The dry joint can be seen better in this close up.
This is what's needed to do the repair.
First use the solder wick to remove the old solder from the join. This will allow the new solder to fuse better.
Once done, you can then re-solder the join.
Once cooled, slip the board back into the cover. The board locates in the grooves in the cover.
Once re-assembled return to the car and plug it in and test to see if problem solved.
I hope this has been helpful.