hi guys can i ask help for my netbook acer aspire one NAV70..?? the problem is no power..i already test input voltage from dc and it is ok.. the problem is no 3volts 5 volts found on circuit.. i already check V-in from 3volts,5volts regulator ic and it is present but still no 3volts 5 volts..
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Acer aspire one NAV70 No Power
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Re: Acer aspire one NAV70 No Power
Originally posted by compute View Postwhat kind of side?
The one that comes from the pwm or the one that the load?
Last edited by ry x hunter; 02-20-2015, 11:17 AM.
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Re: Acer aspire one NAV70 No Power
Originally posted by Compute View PostWhat resistance at pin 11 PU4?Last edited by ry x hunter; 02-20-2015, 11:52 AM.
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Re: Acer aspire one NAV70 No Power
kabayan,
sa load ang short mo.
hunter, the short goes to load to answer your question.
what you can do to trace that quickly is use a dc bench ps set to 3v 1amp and monitor parts going to that direction. shorted part will heat up pretty soon with the setting. if you want to heat up the shorted part slowly, use lower voltage than stated above and gradually increase if nothing heats up but make sure you wont go above stated working voltage of that rail.
to answer another question you asked on how to measure pin 11 of PU4, just use your negative prod to mobo's ground then positive prod on pin 11 using ohm meter.
and as for the board view file : - https://www.google.com.ph/webhp?sour...iew%20software
hope this help kabayan
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Re: Acer aspire one NAV70 No Power
Originally posted by fddizon View Postkabayan,
sa load ang short mo.
hunter, the short goes to load to answer your question.
what you can do to trace that quickly is use a dc bench ps set to 3v 1amp and monitor parts going to that direction. shorted part will heat up pretty soon with the setting. if you want to heat up the shorted part slowly, use lower voltage than stated above and gradually increase if nothing heats up but make sure you wont go above stated working voltage of that rail.
to answer another question you asked on how to measure pin 11 of PU4, just use your negative prod to mobo's ground then positive prod on pin 11 using ohm meter.
and as for the board view file : - https://www.google.com.ph/webhp?sour...iew%20software
hope this help kabayan
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