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Discussion Starter · #1 ·
All of a sudden no sound at all in my system. Car is running works fine, shut car down and come back later, no sound.

Unit is a pioneer avic F90BT and seems to be working fine otherwise. Amp is an alpine PDX5 running all 5 channels. Amp is on and all lit up. Any ideas??
 

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i looked at the pin out. doesnt appear you have one. but its a cable that you can wire to a switch, that will mute the audio.

You can get an ipod with a 3.5mm to rca and plug it right into the amp to test it. i would fiddle with the plugs in the back. make sure they are fully plugged in. have you also checked the settings to make sure that the output is set right?
 

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sounds like either the amp has blown or a speaker cable is touching metal somewhere causing a short! the easiest way to find out if its a short is to disconnect 1 speaker at a time but make sure to do it while the unit is switched off. If you have a multi meter then you can also check each speaker! normally the amp will go into protection mode if this happens and you will have a warning lamp on the amplifier itself.
 

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Discussion Starter · #8 ·
that!s what i did. 3.5 headphone into 2 rca's going into amp inputs. i figure i would at least get some sort of sound. got nothin. amp is lit up like it is working. everything has been running great for almost 2 yrs.
 

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Discussion Starter · #11 ·
it never showed anything but blue but I found one of the sub wires where it goes into the amp connector was loose. i tightened all of the allen screws on the speaker plugs on the amp also. started it back up, works fine right now. thanks for all the help guys. at least i know its somewhere in the amp or amp connections if it happens again.
 
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