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Tech Head - The Technology Section
The Work Bench and Soldering Station
Echostar 3600 PSU help
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<blockquote data-quote="Llew" data-source="post: 519420" data-attributes="member: 175007"><p>Could be the culprit. Should be several ohms if OK, dropping down to a lower value when warmed up with constant current (or externally heated up).</p><p></p><p>If you can concentrate a heat source on the thermistor when first switched on (hair dryer perhaps?) maybe it will prove whether it is indeed the problem.</p><p></p><p>Afraid I don't know the spec of it, although most series NTC thermistors in SMPS inputs should be similar.</p><p></p><p>Llew</p></blockquote><p></p>
[QUOTE="Llew, post: 519420, member: 175007"] Could be the culprit. Should be several ohms if OK, dropping down to a lower value when warmed up with constant current (or externally heated up). If you can concentrate a heat source on the thermistor when first switched on (hair dryer perhaps?) maybe it will prove whether it is indeed the problem. Afraid I don't know the spec of it, although most series NTC thermistors in SMPS inputs should be similar. Llew [/QUOTE]
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