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Metal Detectors
Minelab
Minelab GT16000 tips, settings, questions
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<blockquote data-quote="steelPHASE" data-source="post: 440350" data-attributes="member: 13488"><p>Yep its a cap. I did look through my circuits but I don't have that model. By looking at where it is in the circuit, you can generally figure out what value it is (or close to it anyway). </p><p></p><p>For it to burn up like that, it will be one of 2 scenarios. Either the cap has gone short (tantalums are notorious for that) or something driving the voltages on that rail (a fet or bipolar transistor) has failed causing a higher voltage to feed to that cap, which in turn caused it to burn up. </p><p></p><p>You'll really need to look at the circuitry and draw a bit of a circuit of the local area just to see whats going on. Just replacing the cap without establishing the underlying cause may (and usually will) cause further damage to circuitry further down the line.</p><p></p><p>I have a detector in for repair at the moment that would have been a simple FET replacement but someone else had a look and when reassembling it, they pinched one of the cables causing it to short. It now has multiple areas of damage and, unfortunately, may not be worth repairing.</p></blockquote><p></p>
[QUOTE="steelPHASE, post: 440350, member: 13488"] Yep its a cap. I did look through my circuits but I don't have that model. By looking at where it is in the circuit, you can generally figure out what value it is (or close to it anyway). For it to burn up like that, it will be one of 2 scenarios. Either the cap has gone short (tantalums are notorious for that) or something driving the voltages on that rail (a fet or bipolar transistor) has failed causing a higher voltage to feed to that cap, which in turn caused it to burn up. You'll really need to look at the circuitry and draw a bit of a circuit of the local area just to see whats going on. Just replacing the cap without establishing the underlying cause may (and usually will) cause further damage to circuitry further down the line. I have a detector in for repair at the moment that would have been a simple FET replacement but someone else had a look and when reassembling it, they pinched one of the cables causing it to short. It now has multiple areas of damage and, unfortunately, may not be worth repairing. [/QUOTE]
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Metal Detectors
Minelab
Minelab GT16000 tips, settings, questions
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