Couldn't find a schematic for a T460 but found one for a T460s (Compal NM-A581 motherboard) which shows that the backlight power is supplied via fuse F6 on the motherboard and goes to pins 27 & 28 on the LCD connector.
If the fuse is blown it is a 3A_32V_ERBRD3R00X.
If there is no power on either side of the fuse, the power comes from Q1 (TPCF8002_2-3U1A)
If there is power on the pins then then backlight is turned on and off ''in the screen'' by a backlight enable signal sent on pin 18.
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Here's the [https://www.alisaler.com/lenovo-t460s-compal-nm-a581-schematic/|schematics] that may help you further, (scroll down to the download link). Go to p.38 to see the pinout for the LCD cable connector.
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Here's the [link|https://www.alisaler.com/lenovo-t460s-compal-nm-a581-schematic/|schematics] that may help you further, (scroll down to the download link). Go to p.38 to see the pinout for the LCD cable connector.
Hi,
Couldn't find a schematic for a T460 but found one for a T460s (Compal NM-A581 motherboard) which shows that the backlight power is supplied via fuse F6 on the motherboard and goes to pins 27 & 28 on the LCD connector.
If the fuse is blown it is a 3A_32V_ERBRD3R00X.
If there is no power on either side of the fuse, the power comes from Q1 (TPCF8002_2-3U1A)
If there is power on the pins then then backlight is turned on and off ''in the screen'' by a backlight enable signal sent on pin 18.
Here's the [https://www.alisaler.com/lenovo-t460s-compal-nm-a581-schematic/|schematics] that may help you further, (scroll down to the download link). Go to p.38 to see the pinout for the LCD cable connector.