Repeated signal loss can come from an unstable cable, an unsupported output combination, a connection handshake or intermediate equipment. If the app remains active and the TV shows an input reconnect message, investigate the display path separately from network buffering.
Record the interruption pattern
Note whether the picture drops during channel changes, HDR switches, after waking from sleep or at random during a steady programme. These patterns suggest different causes. A single startup blank screen can accompany a normal mode change; repeated losses during unchanged playback deserve a more focused test.
Reduce the route and demand
Try a documented compatible output and a suitable cable directly to the television if practical. Disable only one automatic matching option at a time for comparison. If a lower-demand signal remains stable, inspect whether every part of the route supports the original resolution, refresh, colour and HDR combination.
Avoid unnecessary account changes
A local input disconnect message does not usually call for replacing usernames or reinstalling every app. Preserve the working settings and test another authorised source through the same route. If the fault follows the cable or input rather than the programme, report those observations to the relevant equipment provider.
