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Tech Head - The Technology Section
The Work Bench and Soldering Station
Schematic For Echostar AD3000ip Power Supply
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<blockquote data-quote="Llew" data-source="post: 473908" data-attributes="member: 175007"><p>It does seem to point to a problem in the primary side - check the components ariund IC1 before replacing it; the IC has several protection circuits within (voltage, current, thermal).</p><p></p><p>Check D5/R9 which provide the main Vcc voltage after turn-on. If this is missing, it could be causing the tripping. Be careful when checking this side of the supply though!</p><p></p><p>I have a spare receiver that I use for checking queries on the SMPS, if you need any voltage comparison checks, just ask.</p><p></p><p>Llew</p></blockquote><p></p>
[QUOTE="Llew, post: 473908, member: 175007"] It does seem to point to a problem in the primary side - check the components ariund IC1 before replacing it; the IC has several protection circuits within (voltage, current, thermal). Check D5/R9 which provide the main Vcc voltage after turn-on. If this is missing, it could be causing the tripping. Be careful when checking this side of the supply though! I have a spare receiver that I use for checking queries on the SMPS, if you need any voltage comparison checks, just ask. Llew [/QUOTE]
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Miscellaneous Sections
Tech Head - The Technology Section
The Work Bench and Soldering Station
Schematic For Echostar AD3000ip Power Supply
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