2016Cameras (Film/Video/HD) forum
Display glitches and power delivery issues with Alexa Mini camera
DisputedParticipants disagreed and reached no conclusion. Read the findings as positions, not as an answer.
What the thread found
- Display output can become distorted or show unexpected formatting, and rebooting the camera may temporarily resolve the issue but not permanently fix it.
- Low battery voltage can trigger display problems even when the voltage meter shows readings above 12 volts.
- Switching to 24 volt power delivery instead of 12 volt power eliminates many operational issues including display glitches and improves WCU-4 focus controller reliability.
- The WCU-4 focus controller may fail to respond and calibrate properly when powered with 12 volt supplies, but works reliably with 24 volt supplies.
- Camera behavior issues including signal format switching between 1.5G and 3G, frame rate instability between 24p and 24psf, and rotating ND filter malfunctions have been reported.
Depends on
- The exact cause of display glitches remains unclear and could be power or heat related.
- Whether 24 volt power solving WCU-4 issues is universal or dependent on specific rig configurations is uncertain.
- Some reported issues may be camera-specific quirks rather than widespread defects.
- No official documentation or manufacturer explanation is provided in the discussion.