use a walkman right on the amp to by-pass all.If it is still the same disconect the Pro`s and use another speaker on it.If it is still the same and its not power to the amp cutting out them you found your problem,The amp

 

if its not a loose wire or shorting wire, it's probably a bad RCA cable

try a different set of cables

 

today i connected different rca's and it was still the same, how do you connect a walkman to it?

 

i also tried my older pro's and it does the same thing, so thats why i bought the new ones because i thought that was the problem, but it happened again so thats why i thought it might be the amp....couldn't it also be the deck?

 

yes it could be.Try what I said so you don`t have to do any uninstall or changing till it is narrowed down.If the above is OK use the walkman on the RCA`s in use if still don`t happen there you go its the deck.Walkman and 1/8"jack to RCA`s is a vary priceless tool sometimes.I used them all the time at my old shop to save people money and my self time