No sound when it worked perfectly for over a month

[steve0046]

Install new Head unit equaliser 2 A 12“ subwoofer one Farid and 2 A wired and RCA’s was working perfect sounded great all of a sudden it stopped checked everything all fuses. All connections. Power is going to both ants no sound. Did I blow my head?

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[Mitchell Fosgate III]

Equalizers. 4 ohms head unit. Possibly loss of voltage going into the equalizer is the reason for loss of music. Loose RCAs, and power from the battery is lost. Could this be from the alternator? Maybe. 14.2 volts total volts supplied.

Okay. The only other thing I can think of is the wiring. If it’s not the head unit blowing out, set a new RCA and wiring to the equalizer. See it that works. If the head unit is not blown out.​

 

[steve0046]

I totally bypassed the equalizer altogether that did nothing and I know I have power going back to it because I have a voltage meter back there and it reads basically the same 14.4 down to 14.2. I think I blew the Head unit.

 

[steve0046]

Equalizers. 4 ohms head unit. Possibly loss of voltage going into the equalizer is the reason for loss of music. Loose RCAs, and power from the battery is lost. Could this be from the alternator? Maybe. 14.2 volts total volts supplied.​

Yes, I totally bypassed the equalizer checked all fuses Car back of radio the amps just thinking I blew the head unit

 

[dragon.breath 10+ year member]

Michell Fosgate is a bot.

 

[Deiimos]

It’s going to be tough to say why it lost sound without inspecting the system in person. That said, if you have a set of RCA cables with a headphone jack / adapter to plug your phone into the amps input, you can check to see if the amps are producing sound. Turn you phone volume all the way down before playing music, then slowly turn it up. The amps must be powered on when you do this, make sure the power light is on, not in protect mode, and you may or may not need to adjust the amplifiers gain / level control. Test each amp separately.

Another thing to try is; see if you head unit has a reset button and reset it (some do, some don’t). Or possibly unhook your battery ground for a few minutes, hit the radio power button with the battery unhooked which might help drain any residual power in it (should not turn on of course since battery is unhooked), then reconnect the car battery and see if the head unit is reset and you have sound again.

Did the power wire short to / touch the RCA cables at all?

Process of elimination testing each component until you find the fault.

 

[shredder1 10+ year member]

Did you check if your sub isn't blown yet? Sounds like you could have popped the coil.

I'd check continuity.

 

[Deiimos]

Did you check if your sub isn't blown yet? Sounds like you could have popped the coil.

I'd check continuity.

Certainly something to check as well!