I've noticed many posts where people speak of resoldering the connections on the circuit boards of their cruise amps. Since my cruise control was suffering from occasional confusement, I decided it was time to resolder mine. I removed it from the car and opened it up. I slid the card out and noticed it looked like it had been dipped in some sort of clear paint when new. The coating is very thick. I find it impossible to resolder the joints because of this coating. When I try, the solder just bubbles under the coating and then pulls up from the board. Even applying new solder, I can't get it to melt onto the board; it just won't stick.
How are ya'll getting around this?