Hi all,
The Little Aussie is back! Hi, Doc.
After a 7 year abscence from bippin', I recently retired from work and I'm now back into bippin' as a hobby. I went back to the bush armed only with my old SD2100. It was as noisy as hell. Very unstable.
I tracked it down to the usual plug end of the coil where it enters the control box. Usual ML problem I thought. So, I checked the pins and sockets in the plug, strapped the cable to the shaft so it didn't move and really tightened up the screw ring.
It was marginally better but still pretty unstable. So the problem must be the cables inside the box. I took the front off the box and very carefully had a squizzy inside. I refitted the coil to the box (with the front still off it), switched on the detector, put on the earphones and very gently (fairy fart gently) moved the cables in relation to one another. I mean gently. Sure enough there was enough movement in the cables, just behind the coil socket to give create a loud unstable noise.
If you have a look behind the box front at these cables you'll see 2 thick wires and a comparatively thin one. These are all held "tightly" together by circular plastic ring held by 2 cable ties. In my case they weren't tight enough. On a detector, the effect of two (or 3) coil cables moving in relation to one another is similar to metal signal being detected.
Remedy - put as many cable ties around those 3 cables as you can get in there, pull 'em on as tight as you can. Put the front back on again. Power up..............
Aaaahhhh - quiet as the grave again. No instabilty, no whooping noises. Fixed.
Explanatory pics below.
I'll send some pics of my "comeback" Aussie gold soon
Le_Slow
The Little Aussie is back! Hi, Doc.
After a 7 year abscence from bippin', I recently retired from work and I'm now back into bippin' as a hobby. I went back to the bush armed only with my old SD2100. It was as noisy as hell. Very unstable.
I tracked it down to the usual plug end of the coil where it enters the control box. Usual ML problem I thought. So, I checked the pins and sockets in the plug, strapped the cable to the shaft so it didn't move and really tightened up the screw ring.
It was marginally better but still pretty unstable. So the problem must be the cables inside the box. I took the front off the box and very carefully had a squizzy inside. I refitted the coil to the box (with the front still off it), switched on the detector, put on the earphones and very gently (fairy fart gently) moved the cables in relation to one another. I mean gently. Sure enough there was enough movement in the cables, just behind the coil socket to give create a loud unstable noise.
If you have a look behind the box front at these cables you'll see 2 thick wires and a comparatively thin one. These are all held "tightly" together by circular plastic ring held by 2 cable ties. In my case they weren't tight enough. On a detector, the effect of two (or 3) coil cables moving in relation to one another is similar to metal signal being detected.
Remedy - put as many cable ties around those 3 cables as you can get in there, pull 'em on as tight as you can. Put the front back on again. Power up..............
Aaaahhhh - quiet as the grave again. No instabilty, no whooping noises. Fixed.
Explanatory pics below.
I'll send some pics of my "comeback" Aussie gold soon
Le_Slow