Congrats for the excelent work on yours "diy" guides!

I've a h850 wich got some water and the touch doesn't work. The problem is on the mainboard (maybe nearby the lcd/digitizer connector). I've carefully cleanned it with contacts cleanner, heatead up with an air solder station and still no results. Shall I reflow part of the connector (very hard work because the size of it)? Is there some component that usually stops working permantly? The option for a new board will be, of course, the last one.

Regards