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The regulator IC always damage even if we are replace another regulator IC together with the resistor .47ohms..

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You need to check the drain into the circuit as the regulator fails ONLY when the current drain exceeds the limit and thereby damages the fusible0.47 resistor.
Either you can use a higher rating of the regulator or you need to check the drain current to see if any component is faulty.

Posted on Apr 06, 2011

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Posted on Jan 02, 2017

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Hello
Check for any short circuit on the output stage of that regulator IC. you can detect it with the help of a multimeter, set to Ohms range, by mesuring its output to negative. OK.

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