Why won't my radio make sound?

[Benstump]

I have an aftermarket radio and amp in my truck. Everything was working fine but I had to move my power cord that went to my amp. When I did it touched my truck. It sparked. It blew the fuse in the cord and I replaced it. Bit now my radio won't work. It come on and lights up but no sound comes out. If I plug and unplug the radio several times it will eventually come on but as soon as I turn the truck off and back on it it doesn't work again. What is the problem?

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[Bigmann6374 10+ year member]

Check the fuse on the radio should be the issue //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif. If not then check all the wiring. If problem persists check cars electrical outputs to radio with dmm.

 

[Benstump]

Fuses are good. I re wired the whole harness. What is dmm

 

[NFrazier 10+ year member]

Well if the radio fuse was the issue the radio wouldn't turn on period, this is turning on but no audio.

What kind of radio is it? A lot of radio's have a protect mode that doesn't have any notification; i.e., Pioneers shut off their internal amplifiers and preouts if there is a short in any of the speaker outputs or RCA outputs.

Get a DMM and verify where the issue is coming from: either no voltage from the RCAs going into the amplifier, or no output from the amplifier (both are vAC and will increase and decrease with volume).

 

[Bigmann6374 10+ year member]

Fuses are good. I re wired the whole harness. What is dmm

DMM Digital Multi Meter //content.invisioncic.com/y282845/emoticons/thumbsup.gif.3287b36ca96645a13a43aff531f37f02.gif

 

[Benstump]

Where can I get a dmm

 

[robert420 10+ year member]

local auto stores should have a dmm available for a decent price