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HP 250 G8 GPT52 La-k202p backlight problem

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    HP 250 G8 GPT52 La-k202p backlight problem

    Hello, I have an issue with the backlight on my HP 250 G8 laptop. Here are the voltage readings:
    • INVPWR_B+: 19V
    • +LCD VDD: 3.3V
    • INVTPWM: 3.3V
    • It does not have a touchscreen.

    Could someone advise me on what else to measure? I've already tested two different LCD panels.



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    #2
    DISPOFF# reading?

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      #3
      Sorry. my mistake:

      INVTPWM 0.67V
      DISPOFF# 3.2V

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        #4
        INVTPWM 0.67V
        Low inverter backlight voltage. At 3v3 the backlight will be 100% on.

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