when i bought my black on black max 95 se the bose head unit screen didn't work....i followed the instructions of some people on the boards here and took it apart and clean some connectors....after, it worked for about a day or two, then the screen went back to blank.....i only cleaned the circuit boards and connectors and such with alcohol...what do you recommend cleaning electronic components with so they will not corrode again (problem last time...build up of brown-syrup like stuff on solders and stuff)...help....!!!