BDM 040 touchpad didnt reacting to touch

Hello, The touchpad on my BDM040 controller isn’t reacting to touch. Replacing the ribbon cable or even replacing the touchpad doesn’t help. Where on the motherboard are the resistor or capacitor for the touch react? The touchpad LEDs light up, button works but there’s no response to touch. Resetting the controller doesn’t help.

UPLOAD picture of the usb port side and check if any knock off components on the bottom side of the touch pad connector

please let me knows if you see something there

Did you dismantle the touchpad with it’s adhesive? Can you take photo of the touchpad pcb and post it here

no, but I tried 4 different working touchpads, unfortunately no response on each one.