If you aren't sure if the remote is sending a signal, look at the front of the remote through a smartphone camera while pressing buttons; you should see a flickering purple light. The exact brand and model number of your television.

: Aim the remote directly at your TV sensor.

: Point the remote at the TV. Press and hold the TV button and the Power button simultaneously until the indicator light stays on, then release both.

Detailed guides and digital manuals can often be found on platforms like or by searching for ST-620 instruction videos on YouTube for your TV brand? AI responses may include mistakes. Learn more How to program or configure universal remote control LM 620

Press SET and POWER together until the LED light turns on.