UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

PeterRoberts · 21st Oct 2020, 2:41 pm

Hi Steve,

I've not got one of these, but an earlier Kenpro KR400RC, which is basically the same.

Have you looked inside the controller? It doesn't really sound like a pot fault, unless one or other (in controller & rotor) has become physically loose and has turned. If either pot was electrically faulty I would expect random and/or uncontrolled movements of the pointer.

Inside the controller I believe that there are a couple of gears driven by a motor to rotate the pointer and that one of these is nylon/plastic and can sometimes split and so slip on its spindle. Worth checking out.

Also, can you not adjust the needle to point to the real position? Just grab hold of the white plastic knurled knob on the front of the controller in the centre of the dial and turn the pointer to the correct position.

Good luck,

Peter
G4DJB

21st Oct 2020, 2:41 pm	#5
PeterRoberts Pentode Join Date: Dec 2011 Location: Camberley, Surrey, UK. Posts: 145	Re: Antenna rotator Hi Steve, I've not got one of these, but an earlier Kenpro KR400RC, which is basically the same. Have you looked inside the controller? It doesn't really sound like a pot fault, unless one or other (in controller & rotor) has become physically loose and has turned. If either pot was electrically faulty I would expect random and/or uncontrolled movements of the pointer. Inside the controller I believe that there are a couple of gears driven by a motor to rotate the pointer and that one of these is nylon/plastic and can sometimes split and so slip on its spindle. Worth checking out. Also, can you not adjust the needle to point to the real position? Just grab hold of the white plastic knurled knob on the front of the controller in the centre of the dial and turn the pointer to the correct position. Good luck, Peter G4DJB