Hi Guys, For a few years I have had one of the 4x100 wrms response 4 ch amps from Jaycar. The model no is cat-aa-0435. It ia a great amp I had it in an old system and it worked really well although it did not get much use. For about 2-3 yrs I have not been using it, and now I have just reinstalled it in my vn. I have had it working well over the last couple,of days but realized it was over heating and cutting out. I thought it was due to lack of airflow ect, but the last time it has cut out and the power protect/ heat protect led has come on and gone red and now it will not work. I know think it was due to a faulty earththat I have since fixed. So my questions are this. Firstly, Can I reset this protect mode(I have tried with no success totally unplugging and checking all the connections) Am I using this amp correctly ( I have the front 2 channels running to Jaycar response 4 inch coaxils in the front. I have the rear 2 channels bridged to run 1 12inch US Audio sub. could this be too much load ect. I ask this because the shiity US audio sub was a package deal in a box from autobarn and I am nnot sure of the speaker specs, it could be dual voice coil ect? If I have damaged the amp can I get it fixed? Anywhere in Brisbane, how much ect or is it time for a new one. If i Need a new one I want to make sure i dont break it too. I am pretty sure the wiring is all ok as I have done it all myself and checked it. Also now I have an old Sony xplod 4ch amp working although it sounds not so good. When the Response amp was working it sounded great. Thanks for any help.