Forum: Schematic Requests ONLY!
Today, 10:41 AM
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Replies: 5
Views: 355
Re: PC specialist NL5E-N18EG motherboard
This question is best posted in the laptop repair side of the forum.
Remove all power -> meter in resistance mode (start with the lowest scale).
Then measure across the mosfet pins as follows:...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 10:02 AM
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Replies: 4
Views: 433
Re: CAP10 LA-E321P Precision 7720
It is from a paid sub that links LA-E311P as the same or similar - you can download the same schematic here:
https://www.badcaps.net/forum/showthread.php?t=100215&highlight=E311p
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 09:27 AM
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Replies: 3
Views: 46
Re: Acer SF314-52 charging
This is ok since you do not have a battery connected so no job to do..
1) Attach the battery and the adapter. What is the voltage @ L8800, pin # 2?
2) Your battery is showing a voltage ~15.08V...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 08:43 AM
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Replies: 7
Views: 43
Re: Acer 5741 LA-5892p not power on.
Can you confirm in diode mode that the component is not defective?
Do check also 2 & 1 then reverse the meter leads, etc.
Concern is if ACON is being pulled down due to this diode.
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 08:33 AM
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Replies: 3
Views: 46
Re: Acer SF314-52 charging
1) is the battery pack detected ?
2) what is the voltage of +BAT_CON with the battery & adapter connected ?
3) Remove all power. Meter in DC volts scale. Measure the voltage of +BAT_CON...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 07:05 AM
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Replies: 7
Views: 43
Re: Acer 5741 LA-5892p not power on.
Good review so far !
There is another similar case on the thread and following the same logic flow.
What is the voltage of ACOFF ?
ACOFF is driving the base of PQ65 to turn it ON and this is...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
05-23-2022, 03:45 PM
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Replies: 17
Views: 156
Re: Acer e1 usb not worknig
When you boot into Windows -> do you see the presence of the USB interface in the device manager tree ? This should be the very bottom of the Device Manager tree -> click the '+' to expand the view....
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Forum: Schematic Requests ONLY!
05-23-2022, 03:32 PM
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Replies: 1
Views: 43
Re: Need BoardViewer HP 11-2010nr (da0c1mbaaf0)
You gave us Shakira so certainly we can (try to) help.
Post the request as a new thread in the laptop repair forum.
Unable to locate a boardview file for this logic board but it may not matter....
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
05-23-2022, 03:17 PM
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Replies: 15
Views: 179
Re: Asus pro p3540fa
Likely this is not a concern to test as the CPU will be a low resistance - for now you can skip this one. CPU rails are often with a low resistance.
Proceed to check the next coil. Often CPU...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
05-23-2022, 03:01 PM
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Replies: 15
Views: 179
Re: Asus pro p3540fa
Ok. That is an ok reading.
At your discretion, consider to start with the top reading coil -> use your local power supply set to 0v8 (that is what we prefer to use) @ current limit 1A (for...
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
05-23-2022, 02:18 PM
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Replies: 17
Views: 156
Re: Acer e1 usb not worknig
Still check the readings of each to ground for the USB pins.
Very lame of them to not stuff this low cost ESD protection device which most likely has caused many failures out in the field.
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Forum: Troubleshooting Laptops, Tablets, and Mobile Devices
05-23-2022, 01:58 PM
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Replies: 15
Views: 179
Re: Asus pro p3540fa
Ok. Remove all power. Meter in resistance mode.
Check the resistance to ground of each coil. Some of the coils are expected to be low as they are low voltage rails for the CPU / GPU, etc.
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