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7th January 2011, 01:12 AM
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#71 |
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diyAudio Member
Join Date: Dec 2006
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tantalum caps are notorious for dead short failures. NCR had a CPU board for a Proof Machine (a check processing machine) with about 10 SMT tantalum caps on it, and there were a lot of failures of those on the +5V rail. the epoxy case of the device used thermally sensitive color dyes in it so that the laser etching of the component markings would show up better. when one of the caps failed, half of the otherwise yellow epoxy case would turn brown making it easy to identify the failed device. regular aluminum electrolytics worked just fine as replacements
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