Re: HP Envy 15-U493DL Charging light on, No power on

Thanks for the help. Memory coil was battery so it is ok. Yes the power button goes to zero. I can try to find bios file and flash. Im thinking IT8987 (super I/O) chip may be culprit. I will try to check the voltage there

I have an HP Envy Motherboard 15-U493DL
DAY62PMB8E0 When Charger is plugged in the light goes on. When the power button is pressed nothing happens.
Mosfet 1
G 17.5v, D 19.5v, S 19.5v
Mosfet 2
G 25.9v, D 19.5v, S 19.5v
Mosfet 3
G .87v, D 19.5v, S .85v

@ 1st mosfet there is I think a Diode 19.5v Right and Left is 0v

The 1st Coil is 0v
The 2nd Coil is .85v (should be 1.3v for memory)

The last 2 mosfets below coil 2 are as follows:
Mosfet 4
G .85v, D 19.5v, S .85v
Mosfet 5
G 0v, D .85v, S...

I have an HP Pavillion Laptop model 15 ab292nr.

I have submitted 2 pictures
These are the details from picture 1
The laptop will turn on the fan spins but no picture on the screen. The power supply unit and screen is fine. When the charger is plugged in the charging light comes on. When the power button is pressed the power light comes on and stays on. First Mosfet there is 19.5V, on both sides (where power comes in and goes out)the Gate is 17.8v. Second Mosfet comes in at 19.5V and leaves at 19.5V the Gate is 25.5v. Next the fuze is fine with 19.5v both sides. Third Mosfet...

Re: New Members - please post your introductions here

Hello everyone. By searching some schematics I found this page. I'm working on repairing laptops for 3 or 4 months. I have been in the Computer repair business for over 13 years now and love fixing computers. I only recently have determined to repair laptops, tablets and 2 in 1 convertible's as these are fun to repair. I've found it very useful to be part of this community!