The PS3 does not have an "HDMI mode" you can switch to composite/component. It has one video output pipeline. If HDMI isn't working, the issue is signal negotiation—not a mode setting.
| Symptom | Likely Cause | Fix |
|---|---|---|
| Black screen, "No Signal" | HDMI handshake fail | Video Reset (Safe Mode) |
| Green/purple tint, flicker | HDCP handshake / cable quality | Disable HDCP / better cable |
| Wrong resolution (480i only) | EDID read fail | Video Reset / manual set in Display Settings |
| Audio only, no video | HDMI video lane fail | Try AV cable / different HDMI port |
No "mode switch" exists. Fix the handshake or use the analog cable. The PS3 handles the rest.