What should I do if a U-verse receiver keeps rebooting and the TV has no sound?
Answer
If a U-verse receiver has been reboot-looping for many minutes, unplug it for a full five minutes, then allow several minutes for a clean boot before checking TV audio settings.
Before you start: stop right away if…
- Do not open the receiver or force internal resets beyond unplugging power.
- A receiver that runs extremely hot or smells burnt should stay unplugged until replaced.
Follow these steps
Power-drain the receiver for five minutes
Unplug the U-verse receiver from the power outlet, wait a full five minutes, then plug it back in and wait five to eight minutes for it to finish booting.
You should see: The receiver stays on instead of reboot-looping.
Confirm the TV input and mute state
Select the correct HDMI input, unmute the TV, raise volume, and confirm the TV is not set to an external audio device that is powered off.
You should see: TV audio settings are ready to play sound from the receiver.
Check receiver audio output settings
After the box is stable, open its audio or settings menu and set TV speakers or the correct HDMI audio option for your setup.
You should see: Sound returns through the TV or soundbar.
Reseat the HDMI cable
If picture or sound is still missing, reseat the HDMI cable at both the receiver and TV, preferably using a known-good HDMI port.
You should see: Picture and sound return, or the issue remains isolated to the box.
Contact the provider if reboots continue
If the receiver keeps rebooting after a long power drain, contact AT&T or your U-verse support channel for a receiver refresh or replacement.
You should see: Support provides a remote fix or schedules replacement equipment.
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Extra tips
What to look for: A U-verse box that keeps restarting for a long period, a TV with picture but no sound or no picture at all, and any Check device power style prompts.
Before you change anything: Note how long the receiver has been reboot-cycling. Confirm the TV input matches the receiver HDMI port. Have the TV remote ready to check mute and audio output. Avoid opening the receiver case.