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My SB-910 needs repair
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<blockquote data-quote="WayneF" data-source="post: 568039" data-attributes="member: 12496"><p>Blue gunk sounds like a problem, does not sound like a good electrical conductor. Is that corrosion gunk, or cleaning gunk? Vinegar is good to neutralize the corrosion gunk, which does need to be removed. You don't want it to run down into the flash electronics though (can hold flash above head to do this with a Qtip). Then an easy cleaning tool is a wood pencil eraser (slightly abrasive), just scrub the metal contact with the eraser end to expose shiny metal for a good contact to the batteries.</p><p></p><p>Probably less likely, but not impossible that corrosion could have entered into the flash body, possibly could have corroded an electronics board? Nikon would be an expensive cleaning, but they could replace a board if necessary.</p><p></p><p>I just fought this with a handheld luggage weighing scale that quit. The batteries were not corroded, and the batteries were good, everything looked great, but the batteries just could not make contact with the metal tabs anymore. Oxidation maybe? It was Not the electronics, it worked now and then, but a voltmeter measured the 3 volts at the batteries, but then measured zero between the metal tabs (with batteries in place). I even cleaned the battery ends, and scoured the contacts with fine sand paper, and they looked shiny, but only occasional intermittent contact. $10 bought a replacement, but the SB-910 is another class.</p></blockquote><p></p>
[QUOTE="WayneF, post: 568039, member: 12496"] Blue gunk sounds like a problem, does not sound like a good electrical conductor. Is that corrosion gunk, or cleaning gunk? Vinegar is good to neutralize the corrosion gunk, which does need to be removed. You don't want it to run down into the flash electronics though (can hold flash above head to do this with a Qtip). Then an easy cleaning tool is a wood pencil eraser (slightly abrasive), just scrub the metal contact with the eraser end to expose shiny metal for a good contact to the batteries. Probably less likely, but not impossible that corrosion could have entered into the flash body, possibly could have corroded an electronics board? Nikon would be an expensive cleaning, but they could replace a board if necessary. I just fought this with a handheld luggage weighing scale that quit. The batteries were not corroded, and the batteries were good, everything looked great, but the batteries just could not make contact with the metal tabs anymore. Oxidation maybe? It was Not the electronics, it worked now and then, but a voltmeter measured the 3 volts at the batteries, but then measured zero between the metal tabs (with batteries in place). I even cleaned the battery ends, and scoured the contacts with fine sand paper, and they looked shiny, but only occasional intermittent contact. $10 bought a replacement, but the SB-910 is another class. [/QUOTE]
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