Lenovo Yoga 9 14ITL5 No turn on

the laptop will not turn on. there is 3.5v at one of the pins for the connector for the ribbon cable that goes to the on/off button. is there a schematic available to show how i can jumper the connector to emulate a button press.

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better MB pic

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Update (05/18/23)

ok i posted the pics. the first is the MB, the second is the C port power connections , and the SMD fuses were not open.

third is the button board. on/off. fourth is where I tested for the 3.5v

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@outthere90479 we need to know what motherboard you have. It could be a NM-C841 Check on the board itself.

Post some pictures of where you measured the voltage and what your board looks like 在已经存在的问题里加入图片

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