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‎09-18-2019 11:31 PM - edited ‎09-18-2019 11:37 PM

HP Recommended
Product: HP Envy 17t-n100, product number M9X67AV
Operating System: Microsoft Windows 10 (64-bit)

Recently I put my HP Envy 17t-n100 laptop to sleep at night as usual while plugged in. When I went to use it in the morning, it was completely dead. The small LED next to the DC power jack was off instead of on. There was no response to the power button.

 

I took the laptop to UBreakIfix, the recommended repair center on HP's website. They tried replacing the power connector and cable but that made no difference. They returned the laptop saying they were unable to repair it.

 

The AC adpater measures 19.5 V as expected. At the end of the power connector cable, where it attaches to the motherboard, I also measured 19.5 V so the board is receiving power.

 

Since almost all of the circuitry is on the motherboard, I thought replacing it would fix the problem. The repair shop agreed but said they don't replace motherboards. I am an electrical engineer so I ordered one online and replaced it but the system still showed no signs of life as before. There are a couple more small boards--a LID board and a USB board with the power switch on it. They are inexpensive so I could just replace them in the hopes that it might fix the problem but I'm tempted to just replace the laptop.

 

Does anyone have a suggestion as to what else I might do? If the LED beside the DC power jack doesn't turn on anymore and the laptop is completely dead, what is the likely fault and repair needed?

 

Thanks!

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