The 2nd MOSFET QM0930M3 was shorted, replaced with another one. Now I am getting 19V at the 1st MOSFET's source, but the 2nd MOSFET is now fluctuating voltage at drain, between 3.2V and 4.4V

There is no short at the main power rail, I have checked that in the first place. I am going to check the 2nd MOSFET as well, did not check that one....

Try to boot MacOS in safe and check if it still panics. It might be GPU related.

I am having some trouble with troubleshooting a Asus X532FL rev 2.0 motherboard, which does not power on. So at the first MOSFET, I am getting 19V at the drain, and then 3.2V on both gate and source (compared with ground). Of course, the 2nd MOSFET's source will have 3.2v at source.

First MOSFET is a QM3056M6 and 2nd MOSFET is a QM0930M3

I already checked first MOSFET and source and gate are not shorted (drain with source not shorted either). Also I have 1.7V at the LDO rail (measured at the keyboard connector, as the power button is on the keyboard).

First...

Re: Strange issue with Lenovo Ideapad



That it is what I am thinking although it is not easy to find it. And also I have to get from some place that allows returns.



No, BIOS was updated using Lenovo's BIOS update utility. But the issue was present before updating the BIOS....

Re: Strange issue with Lenovo Ideapad

Like I said, BIOS has been updated to the latest version available at Lenovo, no change.

What makes it strange to me is that after disconnecting the battery and reconnecting again it will work fine for some minutes, and then back to the same again. If it was some dead part it should not work at all.

Also I did try to disable all sleep options in Windows, and best I could get was in safe mode not to sleep when plugging charger, just turning screen off, and then after unplugging image was back, and even that was only...

I've got a Lenovo Ideapad 310-15ISK notebook with a rather strange issue. Whenever the power adapter is plugged in, image goes off. After extensive testing, here is what I have found:

- It is not software related as it happens outside OS, like in BIOS boot menu. Also the behaviour is different inside and outside OS. If I plug the charger outside the OS, it turns image off, and the unplugging I get image again. Inside the OS (Windows 10), it goes to sleep mode, so I need to press power button to get it off sleep mode inside Windows 10

- This model has both Intel graphics...

Re: Samsung NP300E5A-A05ES doesn't start

Usually there are those issues with NEC tokin present, but in your case you have tantulum caps. So it must be something serious.