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    smps of tv..

    sharp 20v-s300 model. no secondary output, transformer making a loud high pitch sound.
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    how to convert 3-24Vdc to 12vdc

    any help/tips or schematic? how can change unregulated dc voltage ranges from 3v to 24v to regulated 12v dc. my source is a AC varying from 3 to 24V.
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    problem dvd player power supply

    my dvd power was dead it wont start. it has no output voltage in secondary wnding of the transformer. the power supply module uses a philips STARplug TEA1523P (GENERAL DESCRIPTION The TEA152x family is a Switched Mode Power Supply(SMPS) controllerIC that operates directly from the...
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