Turning on a Philips Roku TV without a remote control can be done in a few simple steps. The most common method is to use the physical buttons on the TV itself. On most Philips Roku TVs, these buttons are located on the back or side of the TV. There should be a power button, as well as volume and channel buttons. To turn on the TV, simply press the power button. You can then use the volume and channel buttons to adjust the settings to your liking.
If your Philips Roku TV does not have physical buttons, you can use the Roku mobile app to control the TV. The Roku app is available for iOS and Android devices. Once you have installed the app, open it and follow the on-screen instructions to connect to your TV. Once you are connected, you can use the app to turn on the TV, as well as control all of the other functions of the TV.