In my case the foam pad/cover over the externder/BT/Wifi board was cause a low RF power condition on my printer. My phone could see the printer but could not pair with it. I loaded a Bluetooth find app on my phone to look for the RF signal. Running the app showed no RF power present. When I removed the foam the power was present. The location of the board is on the inside of the top cross bar. I posted a image of these parts in my thread. I believe the antenna connector is located center bottom left, labeled JWX-22xx, if removing the foam cover doesn’t work you could try the momentary switches located near the antenna (wouldn’t it be great if the designer wrote a description of the board? I 'm sure a wired connection to the memory would be done through this board too)
