anyone out there interested in replacing a mono jack on a Minelab Colt control box for me if so please email me your price and I will get with you about it bought used and nut was missing from front found a plastic nut to replace it but when I plug in the headhones I do not get a sound from them and I know they work because I tried them on another unit I am not good at soldering and such I have another 1/4inch panal mountjack bought from radio Shack I really like this detector other than this problem and the battery door being diffacult to stay on But I figure I can live with it since it will be used primarilky by my grandson