Details contained in these two reddit posts: https://www.reddit.com/r/Electronics...rboard_repair/ and https://www.reddit.com/r/Electronics..._super_io_chip
I've been attempting a repair of an Asus TUF H370 Gaming Motherboard. It fails to react to the power button being pressed, there's a debug light which confirms that there's standby power to the board but after any attempt to power on the components there's no sign of life. I've started my diagnosis and I know that the power-on signal to the PSU isn't even making it to the 24-pin ATX connector. If I manually short the ATX power-on pin to ground I can at least signal the PSU to start, but the board isn't starting. So I've concluded that one of the components. between the power button and the ATX connector must be at fault.
Before the motherboard died completely, the ethernet adapter failed i.e. the PC was still booting but it was experiencing issues initializing the adapter. I'd had even bought an Ethernet card to fix the problem temporarily before the MB failed.
Upon inspecting the board with the microscope I can at least say for certain why the ethernet adapter started to experience issues.
I'm not convinced that issues with this IC would be causing the MB from not starting up. I think the best place to look would be around the Super IO IC, but the problem is I can't find a datasheet for it. The Super IO chip is a Nuvoton NCT5582D.
If anyone could help me find a schematic / board view for this MB, a data sheet for this Nuvoton Super IO chip or just general tips / advice I would greatly appreciate it. Thanks!
P.S I've checked the data sheets for the NCT5577D, NCT5585D and the NCT 5569D and none of them seem to match the voltages of what I'm seeing on the pins.
I'm still a novice at electronic repair, this motherboard might be a lemon considering how little information I can find online. If the recommendation is to use this board as a donor board, I would also accept that as an answer 🤣
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I've been attempting a repair of an Asus TUF H370 Gaming Motherboard. It fails to react to the power button being pressed, there's a debug light which confirms that there's standby power to the board but after any attempt to power on the components there's no sign of life. I've started my diagnosis and I know that the power-on signal to the PSU isn't even making it to the 24-pin ATX connector. If I manually short the ATX power-on pin to ground I can at least signal the PSU to start, but the board isn't starting. So I've concluded that one of the components. between the power button and the ATX connector must be at fault.
Before the motherboard died completely, the ethernet adapter failed i.e. the PC was still booting but it was experiencing issues initializing the adapter. I'd had even bought an Ethernet card to fix the problem temporarily before the MB failed.
Upon inspecting the board with the microscope I can at least say for certain why the ethernet adapter started to experience issues.
I'm not convinced that issues with this IC would be causing the MB from not starting up. I think the best place to look would be around the Super IO IC, but the problem is I can't find a datasheet for it. The Super IO chip is a Nuvoton NCT5582D.
If anyone could help me find a schematic / board view for this MB, a data sheet for this Nuvoton Super IO chip or just general tips / advice I would greatly appreciate it. Thanks!
P.S I've checked the data sheets for the NCT5577D, NCT5585D and the NCT 5569D and none of them seem to match the voltages of what I'm seeing on the pins.
I'm still a novice at electronic repair, this motherboard might be a lemon considering how little information I can find online. If the recommendation is to use this board as a donor board, I would also accept that as an answer 🤣
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