Car Electronics Questions? Ask an Electronics Expert for Answers ASAP
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Sorry to hear you’re having trouble.
While it could be electrical, this type of problem is often caused by a bad sensor (contaminated laser lens). You can attempt to clean it by blowing out the disc tray/slot area with a can of compressed air for dusting computers (keep the can upright only so you don't get chemical propellant on the lens).
If this doesn't help, you can try a specialty cleaning disc (Allsop 23321 Ultra Pro Carbon-Edge DVD and CD-Drive Cleaner) which has little brushes that clean the lens more thoroughly.
If still no change, you can disconnect the battery (or just pull the radio fuse) for a a few minutes to let it reset as a next step.
Using the cd player does take more power than just the radio, but only a matter of a few watts to run the motor and laser