[tripletdaddy]

Boy soldering on a window is not my first choice. That scares me. I'd be also afraid of delaminating the heat grid in the area of the repair by cooking the adhesive holding it on. All of the soldering on that grid was done prior to it being installed. I'd opt for another solution that wouldn't risk becoming a $300 repair suddenly. Maybe it can be done, but I'm not convinced. I'd even worry about delaminating the safety glass. If a conductive epoxy exists, I'd definitely use it or some other way around soldering.