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in this video number {979} How to search equivalent for any SMPS PWM IC, i explained if the original ic is damaged or burnt-out or it is not available in local market, or we are unable to find its datasheet. i shared different methods to find equivalent, substitute, replacement. sometimes we need to modify the existing circuit to match the new pins to the existing PCB footprint
check video number 972C how to replace smps • {972C} Repairing STR3A...
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