This is a “bricked” condition. You may need to send it to a Pioneer service center (if available) or replace the main board. This is why power stability is critical.
Fixes flickering or handshake issues between the receiver and connected TVs or Blu-ray players. pioneer vsx-920 firmware update
Updating the firmware on the Pioneer VSX-920-K (a 7.1 channel receiver) can improve performance and resolve common HDMI handshake or signal loss issues. This is a “bricked” condition
: Following Pioneer’s acquisition by CarUX in late 2025, many legacy support pages and firmware hosting sites have been redirected or taken offline. Pioneer VSX-920-K HDMI Playback Issues - Expert Solutions pioneer vsx-920 firmware update