1. Battery Issue:
- When the engine is running, the alternator generates power and provides a stable voltage supply to the electrical components in your car, including the CD player.
- However, when the engine is off, the only source of power is the car's battery. If the battery is weak or degraded, it might not be able to provide enough consistent voltage for the CD player to operate correctly.
2. Alternator Issue:
- If the alternator is faulty or not functioning properly, it may not produce sufficient power to charge the battery or run the CD player simultaneously.
- When the engine is off, the CD player relies solely on battery power, which could be sufficient for its operation.
3. Electrical Interference:
- When the engine is running, various electrical components in the car, such as the ignition system, can generate electrical interference or noise. This interference can disrupt the CD player's functionality, causing it to malfunction or not work properly.
- With the engine off, these sources of interference are eliminated, allowing the CD player to operate without issues.
Here are some troubleshooting steps you can try:
1. Check Battery:
- Start by checking the condition of the car battery. If the battery is weak or old, it may not be able to provide the required power. Consider replacing the battery if it's in poor condition.
2. Test Alternator:
- Have a mechanic or an auto electrician test the alternator to ensure it's functioning correctly and generating sufficient power. If the alternator is faulty, it should be repaired or replaced.
3. Check Wiring:
- There could be an issue with the wiring or connections between the CD player, the battery, and the alternator. Inspect the wiring for any loose connections, corrosion, or damage. Repair or replace any faulty wiring as needed.
4. Contact CD Player Manufacturer:
- Consult the CD player's documentation or contact the manufacturer for additional troubleshooting guidance specific to that particular model.
If you're unable to resolve the issue on your own, it's best to seek assistance from a qualified auto technician or an audio specialist to diagnose and fix the problem accurately. they can accurately diagnose the root cause and perform the necessary repairs.
