Hello,
this is my first request of help. I'm an hobbyist without electronic skills, just willing to repair some laptop of friends.
I have a Lenovo G50-70 ACLU1/ACLu2 NM-A271 Rev.1.0 without power at all, no led if adapter ac connected. My friend gave me after he broken the pin of the ADAPTER_ID of the cable. I thought I need to change only the part (DC POWERJACK PJ718 DC30100LD00) but after reassembled all the laptop boot fine and entered the OS, but the battery was not revealed . I thought was a software problem: no. The laptop shuts off after 20-30 minutes, even with the ac adapter attached. After few attempts to reboot with power button, the laptop doesn't turn on.
I removed the battery and even with the ac adapter only attached the laptop doesn't turn on (battery discharged? no battery charge from AC?)
I tried to reset bios desoldering and resoldering the battery: nothing changed.
So i'm here to track down what component failed. This is my first time trying to read a schematics but with some help form other posts, I managed to track down these values:
-- All values are readed with no battery, ac adapter in (not original)
JDCIN1 20,3v
PF101 20.3v
PQ301
1 20.3v
2 20.3v
3 20.3v
4 0.5v
5 20.3v
6 20.3v
7 20.3v
8 20.3v
PQ302
1 20.3v
2 20.3v
3 20.3v
4 0.5v
5 20.3v
6 20.3v
7 20.3v
8 20.3v
PU301
5 0v
6 2.6v
16 6.1v
20 20.3v
PQ307
1 0v
2 3.11v
3 0
4 0
5 3.11v
6 0
I hope in some help, thanks!
this is my first request of help. I'm an hobbyist without electronic skills, just willing to repair some laptop of friends.
I have a Lenovo G50-70 ACLU1/ACLu2 NM-A271 Rev.1.0 without power at all, no led if adapter ac connected. My friend gave me after he broken the pin of the ADAPTER_ID of the cable. I thought I need to change only the part (DC POWERJACK PJ718 DC30100LD00) but after reassembled all the laptop boot fine and entered the OS, but the battery was not revealed . I thought was a software problem: no. The laptop shuts off after 20-30 minutes, even with the ac adapter attached. After few attempts to reboot with power button, the laptop doesn't turn on.
I removed the battery and even with the ac adapter only attached the laptop doesn't turn on (battery discharged? no battery charge from AC?)
I tried to reset bios desoldering and resoldering the battery: nothing changed.
So i'm here to track down what component failed. This is my first time trying to read a schematics but with some help form other posts, I managed to track down these values:
-- All values are readed with no battery, ac adapter in (not original)
JDCIN1 20,3v
PF101 20.3v
PQ301
1 20.3v
2 20.3v
3 20.3v
4 0.5v
5 20.3v
6 20.3v
7 20.3v
8 20.3v
PQ302
1 20.3v
2 20.3v
3 20.3v
4 0.5v
5 20.3v
6 20.3v
7 20.3v
8 20.3v
PU301
5 0v
6 2.6v
16 6.1v
20 20.3v
PQ307
1 0v
2 3.11v
3 0
4 0
5 3.11v
6 0
I hope in some help, thanks!
Comment