Hello,
My Lenovo Y50-70 turns on but i have no video, fans dont spin, keyboard lights turns on, no ssd activity.
I removed battery, hdd, rams, bios battery, then pressed power button for 30 sec to drain out all energy, still same thing, i did check both mosfets on power module of the board, pq301 and pq302, i get 20,5V on all pins except one pin that have 8.7V
Connected external keyboard, tried on all 3 usb ports, no leds on the keyboard, neither numlock, checked voltage on usb pins, i only have 5.1V on 1 pin, rest 0V
I have 1.4v on PL502 with power on, addpter is connected and working properly, got 20.5V on both channels.
U11 have 3.3v on pin 5 when power is on
U23 have 3.3v on both 8,9 pins
Any ideas what to check more?
Thank You
Board model is ZIVY2 LA-B111P
REV: 1A
Schematics:
My Lenovo Y50-70 turns on but i have no video, fans dont spin, keyboard lights turns on, no ssd activity.
I removed battery, hdd, rams, bios battery, then pressed power button for 30 sec to drain out all energy, still same thing, i did check both mosfets on power module of the board, pq301 and pq302, i get 20,5V on all pins except one pin that have 8.7V
Connected external keyboard, tried on all 3 usb ports, no leds on the keyboard, neither numlock, checked voltage on usb pins, i only have 5.1V on 1 pin, rest 0V
I have 1.4v on PL502 with power on, addpter is connected and working properly, got 20.5V on both channels.
U11 have 3.3v on pin 5 when power is on
U23 have 3.3v on both 8,9 pins
Any ideas what to check more?
Thank You
Board model is ZIVY2 LA-B111P
REV: 1A
Schematics:
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