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Interviews PC Hardware Interviews:80858086A + (Plus) HardwareA+ and Basic PCBasic ComputerBIOSCD-ROM DriveComputer ArchitectureComputer Architecture And DesignCPU (Central Processing Unit)ECDLElectronicsEmbedded SystemsFloppy DiskHard Disk (HD)Hardware and Software DesignHardware DesignIntel MicroprocessorLaptop Hardware RepairerMicroprocessorMotherboardRAMx86Zip Drive
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Laptop Hardware Repairer Interview Question:
Explain about Motherboard?
Submitted by: MurtazaThe motherboard sends a signal to the inverter board telling it when to switch the backlight on. If there is a fault on the motherboard then the inverter board will not receive a signal and therefore not switch the backlight on. It may be possible to check the input voltages to the inverter board with a multimeter but if you have eliminated the previous items I have found this to be quite a commom fault. NB If you connect your laptop to an external monitor and get a good picture this only proves that the video card is OK, there could still be a fault on the motherboard which is preventing your screen from illuminating.
Submitted by: Murtaza
Submitted by: Murtaza
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