Hi all,
I started looking into motherboards repair after watching lots of videos on dicky96's channel. Thanks for your work!
I have this Asus Prime Z270-A motherboard with the following symptoms: motherboard will turn on, then it executes its own tests, passes CPU and DRAM and then shuts down by itself. It is doing it no matter if memory module(s) are inserted or not. I checked for shorts, but I could not find any. I checked VCORE = 0.9V, but it shuts down itself very quick so really impossible to check for other voltages.
I was reading on the web that this symptom might has something to do with a corrupted firmware. So I desoldered the flash chip 25Q128A and I tried to read it with CH341A programmer. But I can't read it, the chip does not return any ID (I cannot test my 1.8V adapter, I am not sure if it is working correctly or not; although I tested the programmer with another 3.3V chip and I get good results). Thus I assume it is faulty, I will try to order a new one.
Also once the motherboard shuts down, I cannot power on again using the regular power button. I have to shut down the power supply from the button, then turn on power supply and then turn on motherboard from power button.
If there are people more experienced with such symptoms, I would like to confirm the following:
1. Should I assume that all voltages are there if the motherboard reaches its own tests, as it passes CPU_LED and DRAM_LED tests? (I have the repair guide for Z270-A but without boardview it is rather difficult to identify for signals).
2. A faulty flash chip would shut down the motherboard? Or could be some other issues with the board.
Thanks!
I started looking into motherboards repair after watching lots of videos on dicky96's channel. Thanks for your work!
I have this Asus Prime Z270-A motherboard with the following symptoms: motherboard will turn on, then it executes its own tests, passes CPU and DRAM and then shuts down by itself. It is doing it no matter if memory module(s) are inserted or not. I checked for shorts, but I could not find any. I checked VCORE = 0.9V, but it shuts down itself very quick so really impossible to check for other voltages.
I was reading on the web that this symptom might has something to do with a corrupted firmware. So I desoldered the flash chip 25Q128A and I tried to read it with CH341A programmer. But I can't read it, the chip does not return any ID (I cannot test my 1.8V adapter, I am not sure if it is working correctly or not; although I tested the programmer with another 3.3V chip and I get good results). Thus I assume it is faulty, I will try to order a new one.
Also once the motherboard shuts down, I cannot power on again using the regular power button. I have to shut down the power supply from the button, then turn on power supply and then turn on motherboard from power button.
If there are people more experienced with such symptoms, I would like to confirm the following:
1. Should I assume that all voltages are there if the motherboard reaches its own tests, as it passes CPU_LED and DRAM_LED tests? (I have the repair guide for Z270-A but without boardview it is rather difficult to identify for signals).
2. A faulty flash chip would shut down the motherboard? Or could be some other issues with the board.
Thanks!
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