Won’t respond to remote or app
#3930x won’t respond to remote - light blinks. Batteries in and out and button pushed. Or app. Restarted cable box. Reset TV. Restarted router. Checked Internet connectio
The Roku Express model 3930 came with an IR remote. While it will work with the Voice Remote, and the Roku app remote, the one that came with the device is the Simple Remote, which is a basic IR remote. If the device won't work with that, then you may have a problem with the device. Yes, the fact it won't work with the app could point to a network issue as well, but the IR issue points to something fundamental that should be worked first.
First, ensure the IR remote is working. Take you cell phone camera and look at the end of the remote while you press buttons. You should see lights. If not, the IR remote is defective. If you do, the remote likely works, and there's something else going on.
Ensure there is nothing obstructing the front of the Roku device. I'm uncertain where the IR sensor is on the current Express device, but if the entire front is clean and clear, and not obstructed, then it should work. If not, there's likely an issue with the device.
This is a good check point in troubleshooting to determine if it needs to proceed, or if the cause is know. What are the results of those tests?