Hi, the laptop powers on only with battery and the voltage drops to 15 V at "PQ301 PQ302 PQ303" elements. The laptop starts but the picture goes blur even with the charger on. The PU301 chip was replased, but the problem still persists. The laptop wont power on withot battery only with the charger in. PLS help
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Re: Lenovo G50-80 ACLU3/ACLU4 NM-A361 NO POWER WHITOUT BATERRY
Have you checked the charger voltage,is it a genuine lenovo charger.Test the DC-IN mosfet . -
Re: Lenovo G50-80 ACLU3/ACLU4 NM-A361 NO POWER WHITOUT BATERRY
I've replaced them both, just to be certain. no changeComment
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Re: Lenovo G50-80 ACLU3/ACLU4 NM-A361 NO POWER WHITOUT BATERRY
What is Voltage of PQ301 PQ302 All pins ? Pin 4 of both fets short be 9.56V approx to switch on the FetsLast edited by Techtiger; 07-04-2019, 06:29 AM.Comment
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Re: Lenovo G50-80 ACLU3/ACLU4 NM-A361 NO POWER WHITOUT BATERRY
no power - PQ302 123-20v 4-5v 5678-20v, PQ303 123-20v 4-20v 5678-1.9v, PQ301 123-20v 4-5v 5678-20v
on power - PQ302 123-19.7v 4-19,7v 5678-15v, PQ303 123-15v 4-3.5v 5678-1.9v, PQ301 123-19.7v 4-19.7v 5678-20v
when powered on every 4-5 sec the voltage goes up to 20v and immideately drops back to 15vComment
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Re: Lenovo G50-80 ACLU3/ACLU4 NM-A361 NO POWER WHITOUT BATERRY
when not on, with the charger in Pins are1-20v 2-20v 5-3.25v 6-2.65v 7-0v 20-19.58v 16-6v; when it is powered on with the battery in (it is not starting witot the battery) 1-20v 2-20v 5-0v 6-2.65v 7-0v 20-18.9v 16-6v.
Inoticed the 15 v that are shown are from the battery it self.Comment
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Hi, everyone.
I have this notebook that won't charge.
In Windows, the charger icon doesn't appear on the battery, but the charger turns on the notebook normally.
PU301:
Pin 5 (ACOK) - 5.97v
Pin 6 (ACDET) - 1.83v (should have 2.6)
Pin 16 (REGN) - 6v
PQ308 has no gate voltage, so it doesn't drive PQ309 low
With the battery connected, its voltage goes the reverse way to the jack, having 14v and not 20v:
PQ301 e PQ302
Pinos 1,2,3 14v
Pino 4 5v
Pinos 5,6,7,8 com 14v... -
Lenovo 80e5 g50-80 ACLU3/ACLU4 NM-A361 rev.1.0
hello I would like some help, my laptop Lenovo 80e5 g50-80 ACLU3 / ACLU4 NM-A361 rev.1.0 does not turn on. when I insert power the led4 flashes and the fan moves a little. I only found the diagram pdf 2014-09 -10 REV0.4. I would need for BoardViewer the version for my ACLU3 / ACLU4 NM-A361 rev.1 and also schematic pdf. Also doing measurements with the multimeter I find on the line + 1.35_VGS to ground 6.06 ohm. According to me too low.
am I facing a short circuit?
that line affects the rams soldered on the board
thank... -
Hello,
Lenovo G50-80 (ACLU3/ACLU4 UMA NM-A362) Rev 1.0
With battery laptop work perfectly ! But with charger no power and not charging ! What can be the problem??
Direct from Charger PIN no connect to laptop: 20.v
PQ301 (4407A)
Drain: 20v - 19v 17v fluctuating
source: 19v - 18 -16v fluctuating
Gain: 19v - 18 -16v fluctuating
PQ302(4483a)
Drain: 2.5v then 5 then 10v then 11v sometimes18 then again 2.5v again and again..
source: 19v - 18 -16v fluctuating
Gain: 19v - 18 -16v fluctuating -
Hello, someone have Lenovo G50-80 (ACLU3/ACLU4 NM-A361 Rev.:1.0) schematic? -
Forum this lenovo just charge when is off and when the battery is nearly 50% laptop shut down
Any idea how start the revisión thx
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