Printed circuit pins repair

I have to tell you that your soldering does not look that good. You need to get some small tools, even a sharp small screwdriver blade if nothing else, knife, abrasive, pencil eraser, whatever you can come up with that is CLEAN and get the surface oxidation off the board

That joint appears to be what is called a "cold" joint. you DO have to be careful not to overheat the board, as you can separate the foil from the board, but it appears that for that joint you need more heat to "flow" the solder

Also refer to your other thread, where I was referring to repair of the gauge limiter socket. See how those contact fingers are crimped into the board? They may NOT be actually making good contact with the board.