Is there an upgrade for a gpx 3500. hasn't been used for about 15 years. Battery won't charge either. Thinking about another WA trip. Was a good detector back then. How does it compare with current detectors. TIA
Contact Detectronics in Dunnolly, Google them to get thier phone number, they will tell you what they can do and what your detector will do after the mods.Is there an upgrade for a gpx 3500. hasn't been used for about 15 years. Battery won't charge either. Thinking about another WA trip. Was a good detector back then. How does it compare with current detectors. TIA
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