Hi @billie365 ,
Did you get something like [https://www.ebay.com.au/itm/HDMI-Male-to-3-RCA-Video-Audio-Converter-Component-AV-Adapter-Cable-AU/173769081559?hash=item287571c2d7:g:rt8AAOSw4zdcUU-9|this] or did you get one like [https://www.ebay.com.au/itm/Composite-AV-CVBS-3RCA-to-HDMI-Video-Cable-Converter-1080p-Upscaling/323818332908?epid=0&hash=item4b6513a2ec:g:E~4AAOSwjftc9jQp&frcectupt=true|this]
The first type doesn’t work as it doesn’t convert the analogue AV signals into the required digital HDMI signals.
The second type is a converter which does.