amp cutting in and out but not turning off and on

[brandonsgsxr]

okay so im running a crossfire bmf 1700 and i blew one of my subs so i took it out tried to sell it no one bought it so i just put it back on some spare subs, this is where the problems began. The amp was working flawlessly when i took it out, put it in a box, took it out of the box and back in the truck and now its messed up. i can be sitting still and the subs will play and then shut off for no reason then i can tap the amp and it will play again. also at low volumes or with everything muted the subs make a super high pitch sound (sometimes). i pulled it out today and as far as i can tell nothing is hurt in the amp but im no expert either. So if you have any help it would be greatly appreciated.

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[mlstrass 5,000+ posts]

check your ground....

 

[Side Show 10+ year member]

take the rca's out and check if it still has that sound, also check your ground as said.

 

[argenis69 10+ year member]

All the above.

 

[jrdnhsnbrg 10+ year member]

^What they said

 

[brandonsgsxr]

it doesnt seem to be the ground because the amp never turns off, like itll cut out but it doesnt turn off