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HP ENVY X360 15-EU0005NA 203037-2 does not turn on, something whistles on the board.

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    HP ENVY X360 15-EU0005NA 203037-2 does not turn on, something whistles on the board.

    Hello, HP laptop model 15-EU0005NA. It does not turn on, 1 in 100 manages to turn it on then after a while it freezes/disappears/flashes, etc.

    After removing the motherboard and connecting the board with RAM to the power supply, I noticed that at first all voltages start correctly and after a few seconds 3.3V on the PL4501 coil disappears and somewhere in this area something starts beeping on the board, sometimes after touching it with a finger in the area of PL4551 it stops beeping and 3.3V appears again.

    Original HP 150W power supply, the diode in the power socket lights up all the time.

    I replaced the 3.3V converter with a new one (SY8386BRHC) but the effect is the same. I do not have access to boardview or the board schematic.

    PL4501 - 7kΩ - 0V-3.3V
    PL4551 - 4MΩ - 5V
    PL4401 - 50kΩ - 2.5V
    PL5301 - 4kΩ
    PL5101 - 23Ω
    PL4702 - 3.5Ω
    PL4701 - 3.5Ω
    PL5202 - 6Ω

    Sorry for my English, I hope the translator helped me enough that the topic is clear to you.

    #2
    Maybe someone has a boardview or a schematic for this motherboard?
    I need a verified kbc and bios dump. I'm thinking about trying to replace the KBC with a new one.

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    #3
    Originally posted by brzostos View Post
    Maybe someone has a boardview or a schematic for this motherboard?
    I need a verified kbc and bios dump. I'm thinking about trying to replace the KBC with a new one.
    Hello brzostos, did you fix that problem?
    I have two with the same problem. ...

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      #4
      Hi, i have the same issue as yours, did you fixed that problem ? I have 8 units with the same issue

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