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Newbie to this forum and from what I have read so far its Excellent , huge amount of info. I prospect in Queensland Australia the ground is very minerlized you put the handle of the pick in the ground with a magnet on it and it comes out like a scared cat mineral everywhere. I just purchased a GMT that works ok in some placed with alot of ajustment.Read a lot about PI detectors can someone give me a helping hand on what would be the best ? do I build a kit , saw a sniffer xr 71p kit on ebay is this ok or am I wasting my money. Thinking of buying a TDI but from what I read there is probly better out there Any help would be great........
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do not buy Sniffer XR-71 kit because it is a deeper, not for nuggets hunting. can you give more info about this PCB? http://cgi.ebay.com/Minelab-GP-Extre...item2c5234f4d7
There are common failures in Minelab P.I Metal detectors that can be repaired by anyone that has some competence with a soldering iron and can follow detailed pictorial instructions. The most common problem by far is the N Channel input switching Fets failing, this in most cases takes out the driver transistor that controls the gate on the Fets. The P channel Switching devices can also fail and it is a good idea to replace these as well. I have repaired many SD GP and GPX series detectors to know what fails and what does not. The components used in the Minelab detector are specialized components, I could just about guarantee that no electronics repair shop would have these parts in stock.
Just imagine that you are out in the outback and your metal detector dies on you, what are you going to do? Even if you do not feel confident working on a Minelab detector you could find the local electronic repair shop and give them the components and instructions to get you up and running again. You are just not buying the parts from me, you are getting detailed instructions culminating from near 5 years research on Minelab electronics in these metal detectors. Minelab as you may or may not be aware grind the component part numbers off in the detectors, they then coat the boards in White paint to stop prying eyes and also seal the boards from moisture. Without detailed instructions you can not even locate the parts and if you did you would not know what they are..but I do! Please note that the picture is of a GP circuit board, this is to indicate what you will be working on to remove components and reinstall new supplied parts.
PS, If you are not competent with a Soldering Iron get someone else to do the repairs.
Questions and answers about this item
Q: Hi i was wondering if you install this kit and if you do how much ? thanks : Norman
A: $120 to install if I do it, free if you do it via the instructions.
May 11, 2010 Q: Do you make a kit for a SD2200D?
A: i may make a retrofit kit for the sd series, if i can source components.
Apr 27, 2010 Q: If this is the part that fails, what symptoms does your detector have? Will this piece install on an SD series?
A: faults range from very noisy to a very quiet or even a dead detector. The SD series use different parts.
Apr 27, 2010 -
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