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
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
Note:
- 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 + 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.
4. Go to the Details tab and change Device Description to Hardware IDs.
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.
2) Run the program.
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.
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.
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