Help me identify this component - HP Spectre 14-ea0023dx

[trepachka]

See attached image. It says "X322" on it. This is a follow-up to my previous posted topic. The issue is upon lid closing, the screen turns off. When lid is opened, the screen remains dark.

This component is positioned right on the edge of the motherboard and has like a cradle made inside the case. I am assuming this component is used as a lid close sensor.

Please, help me identify it. Thank you.

[mon2]

Probably a SOT23 package hall effect switch.

[trepachka]

Looks like this component here: https://www.digikey.com/en/products/...002-RE/5761856

They have a list of different variations of this chip. Which one do I need, though? The link I provided is the only one they have in stock

[mon2]

Check the pinout..suspecting they will be the same. Review what makes the parts different before purchasing. Check the pinout of the logic board you own. Locate ground; vcc; signal pins.

[trepachka]

I ordered this one from the list, it was the only available in stock. Meanwhile, I will desolder the chip later today to see if anything changes.

[mon2]

Test the existing sensor with a magnet. When the magnet is close to this sensor the lcd should turn off; on if the magnet is away. Review the datasheet of the many Hall effect sensors and monitor their output signal. This signal should go high or low varying with the presence of this external magnet.

[trepachka]

Yes, I used a magnet initially. When placing the magnet over that spot, the screen goes dark and so does the keyboard. However, when the magnet is removed, the screen remains dark while the keyboard comes alive.

[mon2]

Then this sensor is working since the keyboard backlight is turning on / off with the use of the magnet. Review the backlight circuit of the lcd. Measure the resistance to ground with no power to the board. What is the resistance in ohms? (Not diode mode measurement)

Locate the backlight enable pin. Measure the voltage to ground of this enable signal. It should be switching on / off with the use of the magnet. Confirm it.

[mcplslg123]

Just remove the lid switch and then backlit should not turn off even after closing the lid.So the laptop should be having backlit all the time. If so,then you need to replace the lid switch. However, if you still have issues with backlit,follow mon2's advise.

[trepachka]

I ordered the replacement sensor since it was super cheap. I will install it and then make a decision whether to spend any more time on this. By removing the sensor from the motherboard and setting sleep options to "Do nothing" on battery and charge, computer at the moment turns everything off except for the screen. But at least the laptop can be used without rebooting it first. Having no schematics is not fun.

By the way, the keyboard turns itself off all the time when lid is closed. It then comes to life after the lid is opened. So, I am thinking there is more than 1 sensor working in conjunction.

[mon2]

What are the silk screen markings on this board? Post pics. There may be schematics available of a similar model.

[trepachka]

The new chip arrived and I had it soldered back to the motherboard. The issue has been resolved.