... 2)Process of unsoldering and repairing”, but you should do as follows:A:Clean the target pad with the ... °C.About the PCB board with components on its both side, please set-up the pre-heat temperature lower, and ... had been maintained, after cooling, clean it, and do the test when it is dry. If it is ... is not on the holder, please do not long time open the IR-lamp, do not shoot the light on the strong ...