Isawthelight
Well-Known Member
Heat sinks are sucking all the heat from the star pads and will result in what's called a "cold solder joint" https://www.google.com/search?q=cold+solder+joint&ie=utf-8&oe=utf-8 . Tin the stars before attaching them to the heatsink for best results using a hobby grade pencil type soldering iron.