86 87TroubleshootingChoosing the Right Coil for the Job 
Continued...
Small, 
Shallow 
Nugget
Large, Deep 
Nugget
Highly 
Mineralised
Less  
Mineralised
Open 
Ground
Heavy 
Scrub
Iron  
Disc.
10" x 5" 
Elliptical 
Double D 
15” x 12" 
Semi-Elliptical 
Double D
18” Round 
Double D
8” Round 
Monoloop 
11” Round 
Monoloop
15” x 12" 
Semi-Elliptical 
Monoloop 
18” Round 
Monoloop 
–  The shaded areas indicate each coils recommended uses.
–  May operate well in Enhance, Fine Gold or Sensitive Smooth timings.
No sound –  Check that the detector is on (battery, power cable, 
connections and LCD)
–  Turn the Threshold control fully clockwise
–  Turn the Volume Limit to maximum (20)
–  Check that the headphones are plugged in
–  Check the volume controls on the headphones
–  Try using a different set of headphones or a 
different battery
Threshold but no target signal –  Try testing different coils with a known target
Random noise –  Ground Balance again
–  Re tune using the Auto Tune button
–  Set the Coil/Rx switch to Cancel
–  Reduce Gain
–  Move away from other detectors working nearby
–  Move away from thunderstorm build-up
Battery will not charge 
–  Check that there is power to the accessories socket using 
vehicle charger
–  Check the fuse in the 12V charger plug (M205–5A)
–  Check the battery LED patterns (p. 20)
Battery not holding charge –  Try an alternative charger adaptor
–  Check power cable
–  Change the battery
'Coil Overcurrent' screen 
appears
–  Turn the detector off, wait for a few seconds before 
turning it back on again