Unstable voltages on the motherboard battery connector on the Lenovo BT-X103F tablet

samtron786

Senior Member

Join Date: Aug 2016

Posts: 178

Country: germany
#1

Unstable voltages on the motherboard battery connector on the Lenovo BT-X103F tablet

09-21-2023, 02:46 AM

I see the voltages on the motherboard battery connector at 3.3V, below 4V they are not stabilized and rise and fall.
Where is the problem?
Thanks
Attached Files
Premium supporters get full download access and other benefits.
Tags: None
samtron786

Senior Member

Join Date: Aug 2016

Posts: 178

Country: germany
#2

02-05-2026, 04:25 AM

Good afternoon, thank you
Model: A6505_PK85a is
2917 H103C
Comment

Previous template Next

Hacking the keyboard connector on my thinkpad X1 tablet Gen 3

by Devicemodder

I recently discovered that the dock connector on the Thinkpad X1 tablet Gen 3 uses USB for the keyboard on the POGO pins, I want to use that connector to add a USB 2.0 hub to my tablet case (lenovo medical case for the X1 tablet)

Can't find much info on that bit online, but found lots of info for converting the Keyboards to USB. I wired up a USB port following https://sharktastica.co.uk/resources/im ... ogo-6p.jpg

If i connect a 10K resistor between ground/pin1 and pin5 (NC) i get a USB ding and then i see voltage on the 5V pin, but it drops to 2-3V when i plug in a...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
01-13-2025, 04:44 PM
Lenovo miix 520 Motherboard 1702B-05-01 many voltages are missing

by Rofix

Hi, I wanted to ask you for some advice. I have this 1702B-05-01 motherboard and it's having problems. If I connect the power supply without connecting anything to the board, it draws 250 mA. As for voltages, I found a coil with 5V, but the other voltages are absent. Using the thermal camera, I detected a component that overheats significantly.
Thanks everyone for any advice.i
.

...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
02-12-2026, 01:22 PM
Toshiba Satellite M50-A keyboard connector on LA-A481P motherboard

by michhak

Hi guys,
i have a damaged keyboard connector on my older Toshiba Satellite M50-A laptop. I know there is LA-A481P motherboard. In attachment pictures there is a real looking connector and i also found a schematic to the connector. But i need help with finding a real electronic part to replace the damaged connector. e.g. on aliexpress (or different page).
It is 34pin connector and the length from pin n.1 to pin n.34 is 26mm. So it means a pitch length is 0.764 mm. I have seen connectors with 0.5mm , 0.7mm , 0.8mm and 1mm pitch length. But not with 0.75. Is it some special custom connector...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
11-17-2021, 05:45 AM
MSI ms-15ck1 motherboard died while unplugin internal display connector

by TaTar

Hello, could you help me ?
I think I killed my MSI ms-15ck1 motherboard while unplugin internal display connector i tried to replace , without previously unplugin battery connector because now i cannot turn the laptop (msi delta 15) on . Not light turning on at all. Can it be fixed? What component should I check *fuse , transistor...?) And where to check in the mother board ? . Thank you for your help!
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
02-22-2025, 12:58 PM
40 pin edp FPC FFC motherboard connector

by shinebad

Hi, Where can I order the 40 pin edp FFC FPC motherboard connector. Image attached. Its for a dell latitude 3400
...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
12-27-2025, 03:59 AM
Loading...
No more items.

Unstable voltages on the motherboard battery connector on the Lenovo BT-X103F tablet

Unstable voltages on the motherboard battery connector on the Lenovo BT-X103F tablet

Comment

Related Topics