Lenovo G50-70 doesn't turn on

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  • speggio91
    Senior Member
    • Apr 2020
    • 83
    • Italy

    #1

    Lenovo G50-70 doesn't turn on

    Hi everyone,

    i'm trying to fix this laptop board, the identification code is: ACLU1/ACLU2 NM A271 Rev 1.0

    When i first received it, the problem was that the board turned on, the fan spinned but nothing else happened, no display at all.

    I managed to flash the bios sent by peste in the Bios thread.

    After that i retried to power on the board and the power consumption goes up to 0.55A, the cpu start to get warm rather hot, and after 3 seconds it shut down after hearing a very flimsy "click" sound.
    During the 3 seconds, the display does turn on for a while meaning the backlight is working but there's no image at the display.

    With the battery inserted on the connector, the board does charge it, the red led is showing and the voltage on the battery is 12V

    What could be the issue? Is still the bios fault or is there the super IO that is shutting everything down due to an anomaly?

    Thank you very much
  • rubenvidalflores
    New Member
    • Jan 2023
    • 5
    • Perú

    #2
    Originally posted by speggio91
    Hola a todos,

    estoy tratando de arreglar esta placa portátil, el código de identificación es: ACLU1/ACLU2 NM A271 Rev 1.0

    Cuando la recibí por primera vez, el problema era que la placa se encendía, el ventilador giraba pero no pasaba nada más, no había pantalla en absoluto.

    Conseguí flashear la bios enviada por peste en el hilo de Bios.

    Después de eso volví a intentar encender la placa y el consumo de energía sube a 0,55 A, la CPU comienza a calentarse bastante y después de 3 segundos se apagó después de escuchar un sonido de "clic" muy débil.
    Durante los 3 segundos, la pantalla se enciende por un tiempo, lo que significa que la luz de fondo está funcionando pero no hay imagen en la pantalla.

    Con la batería insertada en el conector, la placa la carga, se muestra el LED rojo y el voltaje de la batería es de 12 V.

    ¿Cuál podría ser el problema? Sigue siendo falla de la bios o es el super IO el que apaga todo por alguna anomalía?

    Muchas gracias
    Hello, were you able to solve it? The same thing happens to me, except that the camera turns on and the device turns off after 3 seconds and it sounds like a click when it turns off.

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