Hdmi modulator

Thanks mate. It's a technomate hdmi modulator 2018 model. Was working ok up until a few months ago and gradually has become worse. Nano 3t box into this hdmi modulator, then to splitter to various tv's around the house, another thing that never worked was the tv aerial input for saorview. The modulator is supposed to combine that with the nano 3t signal and distribute around the house.