A LDE lamp circuit board, high temperature will cause the light shade (transparent white mist) (do not know is not clean flux or ethanol), the current solution is to get the baking oven 100 C 40min, have what good method?
Ethanol causes polishing treatment.
It's OK to have a dip in a liquid paraffin
The soldering flux on the PCB circuit board can be removed with an ultrasonic cleaner.
