My CD player makes noises sometimes like a record player. What's up?

Question

The discs are in perfect condition, but I have two systems that do this. The home stereo does it after a few hours of playing, and the car stereo does it on every CD about five minutes after starting (even if I start it toward the end or somewhere besides the beginning.)

The symptoms: Music continues to play as expected, except it is accompanied by rather loud noises that sound somewhat like a record player when you bump it while it's playing-- loud, low-pitched static. In the car this lasts for a few minutes and then goes away. The home stereo does it until you turn it off for a few hours. My sister described the noise in the car as something trying to scratch its way into the bottom of the car.

The CD players aren't picky about which CDs they'll do it on...it's more of how long they've been playing. No damage appears to be done to the CDs, they work just fine in other CD players. They are not dirty or scratched, I checked already.

(please wait to comment --I have more)

I want to think that this is a dirty lens problem but I am definitely unsure, as I have never owned or used a CD player cleaning kit before.

Okay you can answer now, I'm done.

Answer 1

As the music is digital it isn't the player doing it. It has to be the disks of a bad system