dqtech
Badcaps
Last Activity: 06-06-2025, 05:25 AM
Joined: 07-03-2018
Location: Wherever I may roam
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here schematic...
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current sense resistor is PR901 right?... if so its 000.0 ohm sir...Leave a comment:
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here sir [USER="295753"]mon2[/USER]
PR937 = 1.2 ohm
PR938 = 1.0 ohmmon2here sir [USER="295753"]mon2[/USER]
PR937 = 1.2 ohm
PR938 = 1.0 ohmLeave a comment:
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here sir..
PJP102 = 3.4v
PJP103 = 5.2v
PU100 pin 17 LDO = 3.3v
Meter in resistance mode. Touch your meter probes together. What is the exact resistance in ohms? = 0.000ohm
Next, place one meter prove directly on pin #1 of the charger IC @ PU901. Other meter probe directly on pin # 2. What is the exact resistance? = 2.7ohm​...Leave a comment:
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not increase sir....with and without battery current still around 0.600ma...Leave a comment:
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[B]VBUS1_ECOK = 0v[/B]
PR1213 pin 2 jumper to ground ( i took from PQ1201 pin 1) = gate on PQ1202 become 1.7v sir and [B]VBUS1_ECOK [/B] still remain 0v[B]VBUS1_ECOK = 0v[/B]
PR1213 pin 2 jumper to ground ( i took from PQ1201 pin 1) = gate on PQ1202 become 1.7v sir and [B]VBUS1_ECOK [/B] still remain 0v[B]VBUS1_ECOK = 0v[/B]
PR1213 pin 2 jumper to ground ( i took from PQ1201 pin 1) = gate on PQ1202 become 1.7v sir and [B]VBUS1_ECOK [/B] still remain 0v[B]VBUS1_ECOK = 0v[/B]
PR1213 pin 2 jumper to ground ( i took from PQ1201 pin 1) = gate on PQ1202...Last edited by dqtech; 05-31-2025, 10:39 AM.Leave a comment:
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hi sir...here the update about this laptop...without battery
ACOK = 3v
ACIN = 3.5v
HW_ACAVIN_NB = 3.3v
PQ1202 gate = 18.5v
PQ1213 gate = 1.2v
Charging ic pin1-2 connectivity to PR917 = 1.5ohm
​SDA/SCL communication on pin21/22 checked with DSO? = is this need use Oscilloscope?..because i dont have it...Leave a comment:
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file working..thank you sir...Leave a comment:
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thank you sir...Leave a comment:
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help ic identification...
im working on HP Probook 450 g5 with no power issue and found out coil beside this ic is short to ground...i remove the ic and short gone....ic code AQP,...looking on this ic marking code but not found [url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/80630-ic-marking-codes-and-datasheets[/url]https://im working on HP Probook 450...und [url]https...
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thanks a lotLeave a comment:
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thanksLeave a comment:
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thanksLeave a comment:
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help ic identify...hp elitebook 850 g8
ic burn...please help identify...this laptop can on but only without cmos and battery....and another problem is when laptop on, i can hold power button to turn off the laptop but when press power button again it wont turn on...need to disconnect charger and plugged in again to turn it on...
Last edited by dqtech; 05-13-2025, 09:49 PM. -
thanksLeave a comment:
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thanks...Leave a comment:
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thanksLeave a comment:
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thanks this file working...Leave a comment:
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thanksLeave a comment:
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