HP- da0r62mb6e1 rev e keyboard problem

[shiriff47]

hello everyone i need help with this board " da0r62mb6e1 rev e " that have some keys not working ( the keys are in the picture )
i changed the keyboard but still not working
i tried my keyboard in another laptop and it working
so the problem is in the board
do i have to change the io

[Sephir0th]

Re: HP- da0r62mb6e1 rev e keyboard problem

Usually there are resistor networks related to the keys on Mobo side. Unfortunately no clear picture of the bkard shared, but worth to check I guess, before messing with the EC.

[shiriff47]

Re: HP- da0r62mb6e1 rev e keyboard problem

thanks for the reply but i dont have those resistors check this photo

[rediii]

Re: HP- da0r62mb6e1 rev e keyboard problem

thanks for the reply but i dont have those resistors check this photo

check connector solder joints. measure in diode mode, if the connector pads are connected with ec and look for abnormal values. maybe the ec is faulty

hope schematic helps

[rediii]

Re: HP- da0r62mb6e1 rev e keyboard problem

thanks for the reply but i dont have those resistors check this photo

u10 looks a bit displaced, did you work on this already? also check ec solder joints then

[Sephir0th]

Re: HP- da0r62mb6e1 rev e keyboard problem

"Displaced" is a good call.

This has to be sorted of course. So we have a NOT mentioned repair attempt in this area. I teally want to ask the thread starter how we should troubleshoot that without asking the crystal ball?

Full history of the device please!