I have a Fosgate 601s amp worked good for a while now it won't heres what happens. when i plug all the things in like i should no sound and i know the sound is working. tried 3 different sets of a/v cables. then i started messing with it. if there is no input on the sound and i plug the speaker in the left side of the amp the speaker sucks down and stays there until i un hook it from the left. if i put it in the right it does nothing just sets there. even if i do have sound same thing. any help will be much appericiated. can't speel

 

Yep, typical Best Buy quality Fosgate. You have some shorted output devices in that amp. You will need to send it in for service, or replace it with a new one.

 

about how much would it cost to get repaird