Static in radio after on for a while. i have a c5 corvette. sound quality is poor. not sure if problem is radio, antenna or speakers. is this a common problem? other vettes that i've had were great.

Not sure if your have a C5 but this site might help you resolve your problem....Check out this forum on the web....https://www.corvetteforum.com/forums/c5-tech/3140791-need-help-with-radio-reset-after-battery-change.html

1998 Chevrolet Corvette Car Stereo Radio Wiring Diagram
Radio Constant 12V+ Wire: Orange
Radio Switched 12V+ Wire: Yellow
Radio Ground Wire: Black
Radio Illumination Wire: Gray
Radio Dimmer Wire: Brown
Radio Power Antenna Trigger Wire: Pink
Radio Amplifier Turn On Trigger Wire: N/A
Front Speakers Size: 4? Speakers
Front Speakers Location: Kick Panels
Left Front Speaker Wire (+): Tan
Left Front Speaker Wire (-): Gray
Right Front Speaker Wire (+): Light Green
Right Front Speaker Wire (-): Dark Green
Rear Speakers Size: 6?
Rear Speakers Location: Rear Sides
Left Rear Speaker Wire (+): Brown
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Dark Blue
Right Rear Speaker Wire (-): Light Blue

it could be antennae, you should hear a hiss in the speakers when you turn it up to halfway. if there is no hiss it is possible a broken connection to speakers or a blown fuse for the speakers in the car.

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.

Hello,

Many people have problem with their car radio like poor sound,poor quality etc..as far as i know its mainly because of the antenna which is used to retrieve the signal.Get it checked with a technician.


Thank You

I had the same exact problem. Toyota changed the Amolifier that improved sound quality but not the FM Reception.

THE HARNESSES CONNECTING ANTENNA TO RECEIVER (TWO OF THEM) HAD IAASUES. REPACING THEM FIXD THE ISSUE. FM RECEPTION EXCELLENT NOW !!!!!!!

the cause of this is a defective is due to one of the following:
1. Antenna is defective or Antenna coax lead to radio shield ground
2. Antenna ground is dirty or corroded
3. Poor radio chassis ground.

this problem is most commonly caused by a poor radio ground to the chassis or a poor antenna ground, if those are ok then the radio is at fault

A antenna issue would be all the time, not come and go, this is what I have learned from 100's of repairs, I would suggest you make sure the radio has a good ground to the chassis, a poor ground will cause these kinds of static issues.