Vizio D55un-E1 Quick Start Guide
![Vizio D55un-E1 TV manual cover](/images/PPjNvBnBYArdfXdCSGasxVLR/thumbs/thumb175x175.webp)
To set up your Vizio D55un-E1 TV, connect it to a power source, attach the stand or mount it, and then connect any external devices like a cable box or streaming device. Power on the TV and follow the on-screen instructions to complete the setup.
If your TV won't turn on, first check that it is plugged in securely. Try using a different power outlet and ensure the outlet is working. You can also perform a power cycle by unplugging the TV for 60 seconds and then plugging it back in.
Press the Menu button on your remote, go to Network, and select Wireless. Choose your Wi-Fi network from the list, enter the password, and connect.
Screen flickering can be caused by a loose HDMI connection or interference. Check all cable connections, try a different HDMI port, or use a different HDMI cable.
To update the firmware, go to the Menu, select System, then Check for Updates. If an update is available, follow the prompts to install it.
The best picture setting depends on your environment, but a good starting point is to set the picture mode to Calibrated, adjust the brightness, contrast, and color to your preference, and turn off any unnecessary enhancements.
To perform a factory reset, press the Menu button, select System, choose Reset & Admin, and then Reset TV to Factory Defaults. Follow the on-screen instructions to complete the reset.
Check if the TV is muted or if the volume is turned down. Ensure that the audio cables are connected properly and try using another source or device to see if the issue persists.
You can connect external speakers via the TV's audio output options, such as the optical port or HDMI ARC. Connect the appropriate cable from the TV to the speaker system and adjust the audio settings on the TV accordingly.
First, replace the remote's batteries. If it still doesn't work, try resetting the remote by removing the batteries and pressing each button twice. If needed, you can also use the Vizio SmartCast app as a remote.