I am getting no sound from my computer speakers, & a screen keeps popping up showing volume audio @ 0

Likely to to be the amplifier. Hear unit works, but the amp doesn't. It appears to be a known issue!

08 cts base the radio come on but no sound from speakers and

https://www.justanswer.com > ... > Cadillac CTS Problems
Jul 29, 2021 - The most common cause of no sound but the radio working correctly is a faulty amplifier. If you understand wiring tests I can provide the ...
1 answer · Top answer: Howdy from Tennessee, I'm Chris aka Moose. I'm glad you've come here to get help. I will do ...

• 
  

  Cadillac STS: radio power on but no sound - JustAnswer

  https://www.justanswer.com > ... > Cadillac Repair
  Aug 19, 2012 - Your radio will still turn on and operate properly but with a failed amplifier no sound will be heard. From what you have described here ...

My Car Radio Turns On But No Sound! - Top Solutions & Fixes

https://stereoupgrade.com > car-radio-turns-on-but-no-s...
Aug 28, 2022 - If your car radio turns on, but no sound comes out, common parts you should check include; blown fuses, Wiring shorts, Faulting input, ...

doesnt sound good ..water there

could be bad earths
amp may have a fuse
speakers need to be tested manually

these links may have wiring layouts etc

VOLVO Car Radio Stereo
Audio Wiring Diagram Autoradio connector wire...

Volvo Radio Wiring Diagram

Hi candy Love , I love that name ! What Altima ? S ,SE or SL

AUDIO

Revision: May 2004 2002 Altima

AUDIO PFP:28111

System Description EKS002KQ

BASE AND MIDLINE SYSTEM

Refer to Owner's Manual for audio system operating instructions.

Power is supplied at all times

through 15A fuse [No. 31, located in the fuse and fusible link box]

to audio unit terminal 6.

With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 6, located in the fuse block (J/B)]

to audio unit terminal 10.

Ground is supplied through the case of the audio unit.

Audio signals are supplied

through audio unit terminals 1, 2, 3, 4, 13, 14, 15, and 16

to terminals + and - of front door speaker LH and RH

to terminals + and - of rear door speaker LH and RH

to terminals + and - of tweeter LH and RH.

BOSE® SYSTEM

Refer to Owner's Manual for audio system operating instructions.

Power is supplied at all times

through 15A fuse [No. 31, located in the fuse and fusible link box]

to audio unit terminal 6, and

to Bose speaker amp. terminal 1.

With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 6, located in the fuse block (J/B)]

to audio unit terminal 10.

Ground is supplied through the case of the audio unit.

Ground is also supplied

to speaker amp. terminal 17

through body ground B117.

Audio signals are supplied

through audio unit terminals 1, 2, 3, 4, 13, 14, 15, and 16

to speaker amp. terminals 23, 24, 25, 26, 27, 28, 29, and 30.

Audio signals are amplified by the speaker amp.

The amplified audio signals are supplied

through speaker amp. terminals 2, 3, 9, 10, 11, 12, 13, 14, 15, 16, 18, and 19

to terminals + and - of front door speaker LH and RH

to terminals + and - of rear door speaker LH and RH

to terminals + and - of tweeter LH and RH

to terminals + and - of subwoofer LH and RH.

SPEED DEPENDENT VOLUME CONTROL (MIDLINE SYSTEM AND BOSE SYSTEM)

If activated, the radio output volume will be automatically adjusted to compensate for increased driving noises

at higher driving speeds.
The radio receives a vehicle speed signal from the combination meter, and selects the output volume.

The Amp in the trunk might have blown,
Town Car Radio Wire Diagram
Car Radio Battery Constant 12v+ Wire: Pink/Light Blue
Car Radio Accessory Switched 12v+ Wire: Yellow/Black
Car Radio Ground Wire: Black/Light Green
Car Radio Illumination Wire: Light Blue/Red
Car Stereo Dimmer Wire: Blue/Red
Car Stereo Antenna Trigger Wire: Blue
Car Stereo Amplifier Location: Trunk
Car Audio Front Speakers Size: 5? x 7? Speakers
Car Audio Front Speakers Location: Doors
Left Front Speaker Positive Wire (+): Orange/Light Green
Left Front Speaker Negative Wire (-): Light Blue/White
Right Front Speaker Positive Wire (+): White/Light Green
Right Front Speaker Negative Wire (-): Dark Green/Orange
Car Audio Rear Speakers Size: 6? x 9? Speakers[img src="http://www.assoc-amazon.com/e/ir?t=modilife-20&l=as2&o=1&a=B00009UHRE" width="1" height="1" border="0" alt="">
Car Audio Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Gray/Light Blue
Left Rear Speaker Negative Wire (-): Tan/Yellow
Right Rear Speaker Positive Wire (+): Orange/Red
Right Rear Speaker Negative Wire (-): Brown/Pink
Check the fuses

The volume control on your radio is called a potentiometer, which may be going bad. It works better when its warm because materials expand as they warm up and make tighter contact with each other.

It is also a possible a bad wiring connection exists. Poor contact will cause static, poor audio quality and intermittent output.

Your radio will have plug type connector(s) Your speakers will most likely each have two wires with single female spade connectors of different widths (keeps the polarity correct) the wire with the stripe (of whatever color) will be connected to the negative (-) speaker terminal.

So you need to check all the connections, one is making poor contact.
If both speakers (assuming you have two) sound good or bad... then start with the plug connectors for the radio and any independent black ground wire coming out of the radio.

If one speakers sounds okay check the connections on the other one. You check the connections by carefully pulling the speaker wire off of the speaker and then carefully pushing it back on making sure it feels tight and secure.

PS: If you pull the fuse for the radio, the radio will have no power and will not work. The radio coming on proves the fuse is good.

PSS: Your owners manual should provide lots of information on your sound system components.

This is why cars with computers are not a good idea.

Replace the speakers if they are amplified types.

So everything is coming on but you have no sound from anything?If that is the case you may want to check the amp fuse.The car has a factory amp i'm trying to remember i think it is in the trunk.Look in your owners manuel for the fuse box location.If the fuse is good then the factory amp may be bad.Or you may have a blown speaker that is showing a short and putting the amp into protect.If the amp and or speakers are bad i highly recommend just buying after market speakers/amp.The price for the factory equipment is very high and there labor rates even higher lol.Plus if properly installed you will noticed better sound from the after market stuff as long as you get brand name equipment.Go to a well trusted audio shop in your area they should be able to see if it is a speaker or amp problem if your fuses are all good.They should be able to test the impedance of the speakers at the amp for you and see what is going on.

Im having the same problem! No pop, just a hum, and my volume dial won't adjust. Like the actual dial isn't working. I can't use radio, cd, or aux. Silence SUCKS.

I would check the amp first, especially if you have very low sound on the speakers. Before amps were made, bad output transistors would create the same effect.