To determine if your transducer is bad, follow these steps:
1. Check if your fish finder is receiving power.
2. Make sure the transducer is securely connected to the fish finder.
3. Inspect the transducer for any visible damage or wear.
4. Test the transducer in different water conditions to see if it produces accurate readings.
If your transducer fails any of these tests, it may be faulty and in need of replacement.