5v sometimes present and sometimes not....when 5v present this laptop can turn on normally....any ideas what could be the problem?
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Acer Aspire E5-473 Not Turn On
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Re: Acer Aspire E5-473 Not Turn On
Originally posted by dqtech View Posti just let the laptop turn on normally and after around 30minutes it goes to shutdown itself....and now 5v missing and pin 12 get only 3.3vLast edited by harshana; 09-22-2022, 08:27 AM.
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Re: Acer Aspire E5-473 Not Turn On
Originally posted by harshana View PostPin12 just only need Enable signal. So its okay to have 3.3v on it. what it the resistance of PL404 to ground? (you should test this without power)
black probe on ground read 80K Ohm
is this correct?
Last edited by dqtech; 09-22-2022, 09:09 AM.
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Re: Acer Aspire E5-473 Not Turn On
Originally posted by mcplslg123 View PostSince 5V_EN is always present and the resistance on output coil is healthy-There can be two scenario's
01.The PWM ic is bad,corroded,missing track, resistor changed value
02.Feedback is not correct.
ya you are right, PWM ic is bad....im waiting for replacement...order from china
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