Car Radio Woes

A year or two ago, my car radio started cutting out occasionally. At that time, the problem was relatively minor; after a few minutes of failing to produce sound, the sound would come back for the rest of the day or so.

I went by a place that sells and installs car radios and asked them if they could easily check to see what’s wrong. They said they’d charge $125 just to take a look–and the actual repair (or replacement) would of course cost even more.

Forget that, I said to myself, and just lived with a less-than-perfect car radio operation.

I didn’t simply replace the radio because I did not know whether the problem was in the radio, the connection between radio and car, or the car’s wiring.

Lately, however, the problem has grown much worse. And the following is true:

If the radio goes out, then I can get it to come back by hitting the dashboard or hitting the roof of the car. I can also get it to come back by slamming the door–but the sound comes back before the door makes contact with the body. It comes on during the swing, in other words.

The problem is not specific to particular speakers–all the sound cuts out from every speaker.

Lately, it has acquired a lot of popping even when the sound is working.

Since all speakers go out at once, and since I can hit the car pretty much anywhere on the inside of the body to make it work again for a while, I take it the problem is either in the radio itself or very close to its point of contact with the car’s sound wiring. (Very odd that hitting the roof works, though. And strange, also, that the sound cuts back in during the swing when I slam the door.)

But how can I figure out for sure where the problem is short of putting a whole new radio in, and if it’s the car’s own sound wiring, how much is that probably going to cost to fix?

Also, btw, I think the symptos are weather-related. It seems like the problem almost completely disappears when it rains!

The first question I have to ask: is it just the sound cutting out, or is the radio losing power completely? For example, does the display go dark?

Have you checked for loose connections in the back of the unit?

It’s just the sound.

To be honest I don’t know how to do that. I can look it up, I’m sure, but I never got around to it because things tend to break when I perform simple operations on them. I guess I’ll need to take the plunge in this case, though.

My car radio did almost exactly what you are describing (but substitute railroad tracks for roof.) I waited until there was a free installation special at the big box electronics store and bought a perfectly nice AM/FM CD player with an MP3 player jack for $100. Sad but true that it is often cheaper to replace things than to repair them.

unplug and replug the speaker connections in the back of the radio a few times.

Does it do it if you’re playing a CD?
I’m going to guess the antenna connection has come loose of the wire is broken somewhere.

ETA If it does it while playing a CD/MP3 etc, then it’s not the antenna. But the antenna is the only thing (other then power) that I can think of that can knock out all the sound with one connection.

ETA2, I’d start by making sure your antenna is screwed on tight and if you can get to the other side of it, make sure the wire is screwed on to the other side of it as well and that the wire is in tact for as far as you can see it (especially around bends, through the firewall etc). Also, if possible, you might be able to just reach under the dash to the back of the head unit and just sort of feel around to make sure all the wires are pushed/screwed all the way in.

I’d be surprised if this problem ends up being related to the speakers, being that the all go out at the same time…was my first thought. Unless it’s connected via a wiring harness that’s come loose. But even then, I’d think you’d lose maybe half of them if it was starting to fall out. But if you’re going to pull the head unit out, might as well check everything at once.

Also, this is (and my previous post) just assuming the radio itself isn’t shot.

The fact that smacking the body of the car gets everything working again suggests a loose connecting or short somewhere and it’s just a matter of finding it.

Just to mention it again, if you haven’t tried it yet. I’d drive around with a CD/MP3 playing for a few days and see if it happens with that. If you don’t have the problem with that, it’s almost certainly the antenna.

It does the same thing with both CD and radio.

i was speaking of multiple connections through one connector (a harness).

those systems can fail either totally or partially.

There goes my theory. My next step would be to try to get my hand back behind the dash* and make sure all the connections are tight. Of course, there’s still the chance it’s a problem with the radio itself.
*It might be easier to pull out the glove box and reach through that way.

Haven’t had a chance to look into it yet, but here’s one more thing I forgot to mention: Lately, it has developed the ability to crackle even when the volume is turned all the way down.