Hi,
I have what a X512JA with no backlight. This is caused by the screen not getting any voltage on the backlight pins. This IC, which I believe is a load switch, is not taking the Vin and sending it to Vout. Vin in this instance, being the AC or Batt, and Vout being the rail going directly to the 4 backlight pins on the edp connector.
I believe the markings on the first line is W07T, second line 2176.
I would like more information on this IC, or a boardview if available (I have looked for this speicfic model and could not find it. I also looked for boardviews of other ASUS models, but could not find one with the same backlight circuit)
Pins:
1 - Vin (AC or batt, it's at 19V with AC plugged in)
2 - (Not sure)
3 - GND
4 - Ven (or I believe at least, it's at 3.3V)
5 - (Not sure, it seems to have a 200k pull-down to GND)
6 - Vout (When the laptop gets plugged in, this pin goes from about 4.5V, up to 6.5V, until it drops down to 2V, while the pin I premuse to be Ven stays constant at 3.3V)
To test, I bypassed the IC using the jumper pads above it to test the backlight, and it did in fact work properly.
Thank you very much for any information you have on this IC, the board for this model, or a board with a similar circuit for the backlight.
Have a good day !
I have what a X512JA with no backlight. This is caused by the screen not getting any voltage on the backlight pins. This IC, which I believe is a load switch, is not taking the Vin and sending it to Vout. Vin in this instance, being the AC or Batt, and Vout being the rail going directly to the 4 backlight pins on the edp connector.
I believe the markings on the first line is W07T, second line 2176.
I would like more information on this IC, or a boardview if available (I have looked for this speicfic model and could not find it. I also looked for boardviews of other ASUS models, but could not find one with the same backlight circuit)
Pins:
1 - Vin (AC or batt, it's at 19V with AC plugged in)
2 - (Not sure)
3 - GND
4 - Ven (or I believe at least, it's at 3.3V)
5 - (Not sure, it seems to have a 200k pull-down to GND)
6 - Vout (When the laptop gets plugged in, this pin goes from about 4.5V, up to 6.5V, until it drops down to 2V, while the pin I premuse to be Ven stays constant at 3.3V)
To test, I bypassed the IC using the jumper pads above it to test the backlight, and it did in fact work properly.
Thank you very much for any information you have on this IC, the board for this model, or a board with a similar circuit for the backlight.
Have a good day !
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