A friend of mine brought me this PC to have a look at. It runs off a 19v adapter and the motherboard is very similar to a laptop board so I thought I'd post in here.
The system does not POST or beep.
The power LED stays orange.
The fan runs at full speed.
The power button won't turn it off again even if you hold it in.
There is no display on screen...
...BUT if you plug something into the HDMI input port, it will display an external signal correctly as well as audio. Though that seems to be handled by a separate Realtek IC.
The battery is OK (3.05v) and resetting CMOS does nothing.
I have tested voltages and everything seems to be working, however there is no Vcore, likely because the VRM controller is not getting an enable or powerok signal.
The BIOS flash has 3.3v but there is no activity on the data lines whatsoever.
My first guess is that the SuperIO chip (ITE IT8732F-CXS) is bad.
Is there anything else likely? I hope it is not some shorted ceramic or open resistor etc because I can find no datasheet for IT8732F, nor schematic for the motherboard (code 48.3KP01.011)
The system does not POST or beep.
The power LED stays orange.
The fan runs at full speed.
The power button won't turn it off again even if you hold it in.
There is no display on screen...
...BUT if you plug something into the HDMI input port, it will display an external signal correctly as well as audio. Though that seems to be handled by a separate Realtek IC.
The battery is OK (3.05v) and resetting CMOS does nothing.
I have tested voltages and everything seems to be working, however there is no Vcore, likely because the VRM controller is not getting an enable or powerok signal.
The BIOS flash has 3.3v but there is no activity on the data lines whatsoever.
My first guess is that the SuperIO chip (ITE IT8732F-CXS) is bad.
Is there anything else likely? I hope it is not some shorted ceramic or open resistor etc because I can find no datasheet for IT8732F, nor schematic for the motherboard (code 48.3KP01.011)
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