So, I recently got ahold of a Sony DXC-M3a. Being a 40-year old camera, I expected troubles.
However, this issue is baffling me.
Note, the videos have a flickering which may trigger epilepsy.
https://nsysdev.com/badcamera/cameraglitch.mp4
https://nsysdev.com/badcamera/cameraglitch2.mp4 (set the switch on the camera to camera-generated color bars at the end)
The camera was not touched at all making these videos, just grabbed the composite with a capture card (the viewfinder also shows the same thing).
Objects used in the first video
Scene in the first and second videos.
I checked the HV supply board, the caps are within tolerance and the voltages are within specification. The amplifier board checks out as well, switching the opamps and ic's between channels did nothing.
Also, when switching the tubes (plugging the red and blue tubes into the then working green's and blue's plug) the issue doesn't follow with the tube, green now just shows what the respective tube is picking up without issue. So at least the vidicons are good, *knock on wood.*
Lastly, checked the deflection board through the test points, and the waveforms match with what is expected.
I'm looking for advice on where and how to look next to figure out what may be wrong. I'm lost as to what other board(s) may be causing the issue, and I could have even overlooked something.
Thank you!