sekhar.india
Member
Last Activity: 02-19-2025, 12:37 AM
Joined: 06-22-2021
Location: Singapore
-
Need Gigabyte GA-h81m-s2ph R2.0 boardview
Hi, Looking for the Gigabyte GA-h81m-s2ph R2.0 boardview file to fix the failed motherboard of my computer. If any of you have, please share. I got the schematic. -
Re: Lenovo Yoga 2 Pro Lenovo nm-a074 schematic and boardview
Hi, I see 3.3V present on the resistor and PIN2. The windows bootup is OK. Did not see the PIN1 (CAP_LED_N) never pulled low. I am not sure, what to check further. Any one have idea, how the keyboard enable work on the motherboard? -
Re: Lenovo Yoga 2 Pro Lenovo nm-a074 schematic and boardview
Hi, I could able to find the resistor of 150 ohm. I was deceived by the test points near the connector. The PIN1 start from the left side. I am assuming that the keypad matrix, 3V supplied and PIN1 (CAP_LED_N) is the ground for the backlit LED which is controlled by CPU GPIO....Leave a comment:
-
Re: Lenovo Yoga 2 Pro Lenovo nm-a074 schematic and boardview
Here are the closer look at J9 and the other side of the PCB at J9....Leave a comment:
-
Re: Lenovo Yoga 2 Pro Lenovo nm-a074 schematic and boardview
I have checked all the near by parts. I have tried to check continuity with PIN2 and surrounded components. None of them is show-up. The test pads near J9 connector show the connection. The other way I have tried to check the resistance between PIN2 and +3V on connector JP26 PIN15. No success. Any idea, which +3V rail might have connected?Leave a comment:
-
Re: Need Lenovo Yoga 2 pro 13 NM-A074 boardview
By chance, do you have any resistors listed? If possible please share. Many thanks.Leave a comment:
-
Re: Need Lenovo Yoga 2 pro 13 NM-A074 boardview
Do you have the boardview? The board silk print only have very few components listed.Leave a comment:
-
Re: Need Lenovo Yoga 2 pro 13 NM-A074 boardview
Trying to find R313, which is supplying 3V to the keyboard matrix at JP9 connector.Leave a comment:
-
Need Lenovo Yoga 2 pro 13 NM-A074 boardview
Hello, I have Lenovo Yoga 2 pro 13 with i7 4500U processor and 8GB RAM. I do have the schematic KONA NM-A074.
The laptop is working fine with bluetooth keyboard and mouse, but not with attached ones. At the startup The backlit LED of keyboard is ON, but later is not working. I have tried all windows based setting and now looking for HW debug.
I am looking for boardview file for KONA NM-A074, as unable to find the resistor locations. Please share if any one have.
If any one resolved similar issue, suggest...Leave a comment:
-
Re: New Members - please post your introductions here
Hello, My name is Chandra and a hobby electronics engineer and professionally Embedded software engineer. I do repair electronics for myself and for my friends. Thanks.Leave a comment:
No activity results to display
Leave a comment: