Mach 460 problems help!!

I dunno,maybe the internal amp or whatever that thing is called.Its the output part internally that im talking about just a guess.When I got my 01 I had to have my mach system changed twice,once with your prob,2nd time cd player crapped out,and in Jan the cd went again plus the volume knob went haywire,turn vol down but it would go up.I just replaced with a nice Kenwood with the cable adapter so that I could still use the Mach amps and all the speakers...sounds a whole better now.Sorry couldnt be more help,but thats my experience.Dont get me wrong I liked the Mach unit but it just wouldnt stay working.

amps prob took a ****

I dont think thats true,if he is meaning the 2 external amps in the trunk.Its like this....you ever turn your key on and hear the radio come on but it sounds low volume and then about 2 secs later the sound really kicks in,well thats because the power to the amps havnt come on yet.What im trying to say is,if both of the amps in trunk died you will still have sound it will just be alot lower volume.I think it could be the internal amp in the head unit or if you lucky maybe the speaker harness that connects to the back of the unit has come loose.Possible could be a fuse if you havnt checked them yet.If you were to get a new head unit and for some strange reason both amps were bad you still be able to get sound alll be it wont be as loud,but I really dont think thats the problem.