I recently installed my JL audio amplifier without the subwoofer and it was gorking fine. I tried adding the sub and it immediately started to overheat (theres a wiring issue there). I took out the sub and it worked fine again. I rewired the sub and tried again. This time the amp would not completely come on. I took out the sub once more and tried running it again. Now the amp comes on but with very little power (not enough to put music through the speakers but at least the power light does come on). Did I fry my amp now??!!
For anyone else that might have the same problem in the future... it maybe as easy a problem to fix as mine!! I went back and checked all my connections and turns out that the ground had come a little loose. I resecured the connection and the amp clicked right back to life.