| Problem | Possible Cause | Solution | | :--- | :--- | :--- | | No Power / No Sound | Dead or poorly connected batteries | Replace with new alkaline batteries. Check battery terminals for corrosion. | | Erratic signals / False beeping | Sensitivity set too high; electrical interference from power lines; heavily mineralized ground | Reduce the SENSITIVITY setting until the detector is stable. Move to a different location. | | Low volume or no audio | Batteries low; VOLUME knob set too low; defective headphones | Check batteries, adjust the VOLUME knob, or try using the built-in speaker if headphones are used. | | Detector won't hold steady tone | Battery power fluctuation; threshold setting too low | Check the batteries. Press the RESET button. Adjust the TRESHOLD knob to establish a consistent background hum. |
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