Any suggestions for what type solder to use to repair soldered connections in mods? My istick tc 100w started acting up, took it apart and discovered that the soldered connections between the main pcb and switch pcb had cracked. Chinese engineering at its finest, nothing else secures the two pcb boards beyond the soldered points which are all along one side creating a hinged effect. Off center pressure can tilt the smaller pcb for the switch a bit and allows the solder to crack, two of 4 connections are cracked. My hopes are to pick up a cheap soldering pen in the 40-60w range but not sure which solder they used. If all goes well just a touch of heat may allow it to reflow together using theirs. Otherwise I'll have to add a little bit but not overly keen on mixing solders. Here's a crappy pic but the idea is there. The red arrows point to where the soldered joints need repaired, the yellow lines are where I'm hoping to add a bit of super glue or something to bolster the switch pcb and take some of the pressure off the soldered joints. Thanks for suggestions.