Why Panasonic viera TV not reading USB device?

If your Panasonic Viera TV is not reading a USB device, it could be due to several reasons. The USB drive may not be formatted in a compatible file system, such as FAT32 or exFAT, which the TV supports. Additionally, the files on the USB may not be in a supported format, or the USB port itself might be malfunctioning. Try using a different USB device or port, and ensure that the files are compatible with your TV.