What to do if my Minelab VANQUISH 440 does not turn on?
- CCrystal RussellJul 28, 2025
If your Minelab Metal Detector does not turn on or turns off unexpectedly, even with a ‘bF’ indication, try charging or replacing the batteries.

What to do if my Minelab VANQUISH 440 does not turn on?
If your Minelab Metal Detector does not turn on or turns off unexpectedly, even with a ‘bF’ indication, try charging or replacing the batteries.
Why is my Minelab VANQUISH 440 making excessive noise?
If you're experiencing erratic or excessive noise with your Minelab Metal Detector: * Move away from any local sources of Electromagnetic Interference (EMI). * Restart the detector and allow the Automatic Noise Cancel to complete. * Reduce the Sensitivity level.
Why is there no sound from my Minelab VANQUISH 440 with wired headphones?
If there is no sound from your Minelab Metal Detector when using wired headphones: 1. Ensure the detector is turned on and the start-up process is complete. 2. Verify that the headphones are properly plugged in. 3. Check the volume level to ensure it is audible. 4. Unplug the headphones to confirm if the detector speaker is working. 5. Try a different set of headphones, if available.
How to pair ML 80 Headphones with Minelab VANQUISH 440 Metal Detector?
If you're having trouble pairing your ML 80 Headphones with your Minelab Metal Detector: * Try powering off the ML 80 headphones and then re-pair. * Make sure the headphones are within 1 meter (3 feet) of the detector control unit, without any obstructions between them. * Move away from sources of interference, such as mobile phones. * If many other Bluetooth devices are nearby, move away from the area and try pairing again. * Perform a factory reset on the headphones and attempt to re-pair to the detector. * Pair the detector with different Bluetooth headphones, then attempt to re-pair ML 80 headphones to the detector.
What to do if there is no sound from ML 80 Headphones on my Minelab Metal Detector?
If you are not getting any sound from your ML 80 Headphones with your Minelab Metal Detector: * Check that the headphones are turned on. * Ensure that the detector's Bluetooth is turned on and paired with the headphones. * Confirm that the headphones are charged. * Verify that the detector volume is set to an audible level. * Also, check the volume control on the headphones. * Try a different set of Bluetooth headphones. * Try wired headphones.
How to fix distortion in ML 80 Headphones with Minelab VANQUISH 440?
If you hear distortion or crackling in your ML 80 Headphones when connected via Bluetooth to your Minelab Metal Detector, reduce the volume on the headphones until the distortion disappears. If needed, increase the detector volume to compensate.
| Technology | Multi-IQ |
|---|---|
| Discrimination Segments | 12 |
| Audio Tones | 3 |
| Iron Bias | High |
| Sensitivity | 10 levels |
| Volume | 10 levels |
| Display | LCD |
| Backlight | No |
| Pinpoint Mode | Yes |
| Coil Type | Double-D |
| Search Modes | Coin, Jewelry |
| Battery | 4 x AA |
| Water Resistance | Coil waterproof to 1 m (3.3 ft) |
| Audio Output | Built-in speaker and 3.5mm (1/8") headphone jack |
| Coil Size | 10" x 7" |
| Searchcoil | 10x7” DD |
| Length | Adjustable (1.1m - 1.3m) |
Explore the different search modes: Coin, Jewellery, Relic, and Custom for various detecting scenarios.
Managing target rejection, editing patterns, and target identification guide.
Information on Target ID, depth, active search mode, and discrimination segments.
How to use the Accept/Reject button to manage target responses.
Creating custom discrimination patterns by accepting or rejecting target segments.
Details on battery run times and rechargeable battery charging.
Critical safety measures for operation, storage, and use.
Steps to take when the detector displays a coil disconnect error.
Guidance on resolving general system errors displayed by the detector.
Solutions for power interruptions, erratic noise, and no sound from headphones.
Troubleshooting Bluetooth pairing failures and audio distortion with wireless headphones.











