Hi,
I have an issue with my laptop, Asus K501UX.
At first, it was working properly. Then it began to try to start up but shut down after a few seconds. Now it won't do anything, no light is showing, nothing.
I did tried to reset the BIOS.
I have another Asus laptop, an Asus UX303L. I disassembled both laptops, and found out that the batteries are the same. When I put the UX303's battery inside the K501, it works perfectly, normal discharge time, everything is working properly. When the charger is plugged, windows tells me that it is indeed charging. But it is not the case, the battery is discharging like if the power connector wasn't plugged in. By the way, the K501's battery is working properly on my UX303.
The laptop isn't booting up if there is no battery. And if the battery is dried, it won't boot up either.
I made some research, and found this thread : https://www.badcaps.net/forum/showthread.php?t=54003
I then decided with my multimeter to test some things, but I don't have the background to analyse them ... That's why I need your help !
Here are my results :
A) Battery unplugged, charger plugged
- Voltage on the power connector, it is 19.32, this is normal.
- Voltage on the connector of the battery :
The connector looks like that : BLACK BLACK BLACK DATA CLOCK RED RED RED
Black pins are connected together and to the ground, and red pins are connected together. I measured 0.14V between ground and red.
- Voltage between the MOSFETS (see attachments) and the ground. On the first side of the first Mosfet, it is 19.32V. On the other side it is exactly 0 (and obviously on the second one everything is at 0V because the second ne is connected to the first one). Someone told me that this is normal, because the battery isn't plugged in.
- I saw a video on YouTube, which suggested to test if capacitor were okay. I put one side of my multimeter (with the bip mode) on the ground, and tested both sides of every capacitors on my MB. On a lot of capacitors, I could hear a bip on both sides.
B) Battery plugged, charger unplugged
- Voltage on the power connector, 10.8V
- Voltage on the connector of the battery :
The connector looks like that : I measured -10.8V between ground and red. It is negative, I figured it was normal because the voltage comes from the battery, not from the charger which isn't connected
- Voltage between the MOSFETS (see attachments) and the ground. On the first side of the first Mosfet, it is . On the other side it is exactly 10.8V. On the second one, I can measure 10.8V on both sides.
- When I test every capacitor, none of them bip on both sides.
C) Both plugged
I got exactly the same results as when the battery is plugged and the charger isn't.
Can you guys help and tell me what to do next ? I'd really enjoy to fix this computer which is better than mu UX303L. And I don't really want to modify the computer to add my own charging circuit.
Feel free to ask me any information.
Thanks !
I have an issue with my laptop, Asus K501UX.
At first, it was working properly. Then it began to try to start up but shut down after a few seconds. Now it won't do anything, no light is showing, nothing.
I did tried to reset the BIOS.
I have another Asus laptop, an Asus UX303L. I disassembled both laptops, and found out that the batteries are the same. When I put the UX303's battery inside the K501, it works perfectly, normal discharge time, everything is working properly. When the charger is plugged, windows tells me that it is indeed charging. But it is not the case, the battery is discharging like if the power connector wasn't plugged in. By the way, the K501's battery is working properly on my UX303.
The laptop isn't booting up if there is no battery. And if the battery is dried, it won't boot up either.
I made some research, and found this thread : https://www.badcaps.net/forum/showthread.php?t=54003
I then decided with my multimeter to test some things, but I don't have the background to analyse them ... That's why I need your help !
Here are my results :
A) Battery unplugged, charger plugged
- Voltage on the power connector, it is 19.32, this is normal.
- Voltage on the connector of the battery :
The connector looks like that : BLACK BLACK BLACK DATA CLOCK RED RED RED
Black pins are connected together and to the ground, and red pins are connected together. I measured 0.14V between ground and red.
- Voltage between the MOSFETS (see attachments) and the ground. On the first side of the first Mosfet, it is 19.32V. On the other side it is exactly 0 (and obviously on the second one everything is at 0V because the second ne is connected to the first one). Someone told me that this is normal, because the battery isn't plugged in.
- I saw a video on YouTube, which suggested to test if capacitor were okay. I put one side of my multimeter (with the bip mode) on the ground, and tested both sides of every capacitors on my MB. On a lot of capacitors, I could hear a bip on both sides.
B) Battery plugged, charger unplugged
- Voltage on the power connector, 10.8V
- Voltage on the connector of the battery :
The connector looks like that : I measured -10.8V between ground and red. It is negative, I figured it was normal because the voltage comes from the battery, not from the charger which isn't connected
- Voltage between the MOSFETS (see attachments) and the ground. On the first side of the first Mosfet, it is . On the other side it is exactly 10.8V. On the second one, I can measure 10.8V on both sides.
- When I test every capacitor, none of them bip on both sides.
C) Both plugged
I got exactly the same results as when the battery is plugged and the charger isn't.
Can you guys help and tell me what to do next ? I'd really enjoy to fix this computer which is better than mu UX303L. And I don't really want to modify the computer to add my own charging circuit.
Feel free to ask me any information.
Thanks !
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