Need help solving my problem. Fuses blow on amp and now lots of noise in system

[branden 10+ year member]

So my system was working 100% fine and I got in my car this morning, turned it on and heard crackling/popping in my speakers and immidiately turned everything off. Realized the 3x20 amp fuses on my Sundown amp were blown. I replaced these and everything works but now there is crazy noise in the system. Coming from both the sub and mids n highs...

It is very loud and annoying, I'm getting noise from both the amp that blew the fuses, and my sub amp as well. Now the sub thumps when turning off the car... all kinds of noise I never had before.

When I unplug the RCA's from the head unit the noise goes completely away. Could it be the head unit? Not sure where to start. Not sure what kind of electrical phenomenon would introduce this sort of noise into my system. Please HELP! Thanks guys

My setup:

Kenwood KDC-x994

Sundown SAX-100.2

Sundown SAX-1200D

CDT Components

12" Sub

In an Acura RSX

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[MutantDreams 10+ year member]

Check your grounds, this happened to a buddy of mine, he had a bad ground and he ended up frying almost a grand worth of equipment.

I just noticed you had the exact head unit as him. Something went bad on the radio and fried his RCA outputs, that might be it too.

 

[branden 10+ year member]

Check your grounds, this happened to a buddy of mine, he had a bad ground and he ended up frying almost a grand worth of equipment.
I just noticed you had the exact head unit as him. Something went bad on the radio and fried his RCA outputs, that might be it too.

No crap! Yea I've heard these RCA's can go bad. Thank you for your input

wait.... the problem was a ground or the head unit?

 

[Beatin' 10+ year member]

i bet the rem wire shorted out......

 

[MutantDreams 10+ year member]

We still think its both. He was pulling more current than the ground could handle, so it sent back feed through the amps rcas back to the head unit. Any pics on where everything is grounded?

I would check things in this order.

1: check the grounds for your amp just to see if that fixes it.

2: test the rcas/head unit by hooking up another radio to the rcas and see if there is still noise.

3: measure the resistance between the head unit RCA outputs.

 

[branden 10+ year member]

Replaced head unit, problem solved