LCD Panel Auto-Touch or ghost touch solution - Yoga 3-1470, Yoga 700 14isk

LCD Panel Auto-Touch or ghost touch solution - Yoga 3-1470, Yoga 700 14isk

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LCD Panel Auto-Touch or ghost touch solution - Yoga 3-1470, Yoga 700 14isk

Symptom

Yoga 3-1470, Yoga 700 14isk touch screen shows that it is being touched when no external input is present. You may see white circles on the LCD as shown in the screenshot and video.
https://download.lenovo.com/consumer/hnt/yoga_3_1470_lcd_autotouch.MOV

Yoga 3 14 touch screen

Note:

  1. During firmware flash, use the following steps:
    • Unplug AC-adapter.
    • Keep battery capacity over 50%.
    • Do not touch the LCD screen during the firmware update.
    • The firmware is only for LG panel.

Applicable Brands

Lenovo laptops

Applicable Systems

  • Yoga 3-1470 with LG panel (PN: 5D10H35588) produced before July, 2015
  • Yoga 700 14isk

Operating System

Windows 10

Solution

Confirm the presence of a LG Panel by going to Device Manager to check the hardware ID.

1. Press the Windows Key windows button in windows 10 + X.

2. Select Device Manager from the Menu in the bottom left corner.

3. Under Device Manager, click the arrow to expand Monitors and double-click Generic PnP Monitor. This will display the Generic PnP Monitor Properties window.

device manager monitor in windows 10

4. Go to the Details tab and change Device Description to Hardware IDs.

device id check

5. If the Value says “Monitor\LG****”, then continue with the Firmware update process.

Download touch panel firmware from here and update this firmware (which includes re-calibrating the screen):

Firmware update procedures

  • Unplug AC-adapter.
  • Keep battery capacity over 50%.
  • Do not touch the LCD screen during the firmware update.
  • The firmware is only for LG panel.

1) Download the touchpad firmware to desktop.

LCD Auto touch

2) Run the program.

LCD Auto touch

3) When the update completes, the program will show success. Follow the instruction to Press any key to continue, then Please press any key to exit.

LCD Auto touch

LCD Auto touch

Note: If the panel brand is not LG, system will show the following picture after running the program. Exit because there is no need to update touch FW for other brand panel.

YOGA 3 14 LCD AUTO ROTATE ISSUE


Alias Id:IN20150612-001
Document ID:HT103512
Original Publish Date:12/05/2017
Last Modified Date:08/21/2024