How do you unlock a magnum tv without a remote?

To unlock a Magnum TV without a remote, you can try using the physical buttons located on the TV itself. Look for a power button or a menu button; pressing these may allow you to access the settings and unlock the screen. If that doesn't work, consider using a universal remote app on your smartphone if your TV supports it, or you may need to perform a factory reset by pressing a specific combination of buttons, which can often be found in the user manual.