Cable Release Stopped Working

Viltrox on a 5DMKIV stopped working all of a sudden during a shoot. Was working fine during a late afternoon in AV mode and then stopped in manual mode after dark during a MW session. New batteries and well I'm just stumped and bummed that it has stopped working. Am I just having a brain fart and forgetting something or what?

What is not working, focus or shutter release? Focus has to be assigned to the front (shutter) button for a remote to do any focusing.

Bassat wrote in post #18439026
What is not working, focus or shutter release? Focus has to be assigned to the front (shutter) button for a remote to do any focusing.

Sorry shutter release.

I spent a bit of time with my remote release and the 80D. I can't make it NOT fire the shutter, no matter the focus settings on the camera. Kind of makes me think your remote release is broken. Does the camera work properly without the release?

Bassat wrote in post #18439085
I spent a bit of time with my remote release and the 80D. I can't make it NOT fire the shutter, no matter the focus settings on the camera. Kind of makes me think your remote release is broken. Does the camera work properly without the release?

Yes it does. I'll borrow a release from a friend and see if hers works, thanks.

I'm pretty sure that the button is not making contact to trip the shutter. In a basic release they have a two stage button, and the first stage closes to start AF/Metering, and the second stage fires the shutter. Internally in the camera the remote release switch just seems to be wired in parallel to the actual shutter button.

In an emergency you could just cut the switch off the wire, strip back some of the wire and try touching them together. One of the three wires will be common, and the other two will be AF and Shutter. Since usually all three are connected together when the shutter fires you have no danger of damaging the camera trying different combinations to find the correct function of each wire. The common is most likely to have black insulation, but you might not have a black wire, and it may not be connected as the common, it would just be a starting point for me. You only have six options, including none and all three connected, so it won't take long to figure out. This Macgyvering will get you out of trouble, at least on a landscape or other shoot where the subject is not moving about too fast.

For the more advanced types of release, with the built in intervalometer, they have far more possible points of failure. Any of the components on the internal PCB could fail and cause partial or total failure of the unit. Depending on where the failure has occurred it may well be possible that you might be able to set the intervalometer and that will actually trigger the camera, even though you can't do it directly via the button. Even if you put a new battery in it I would still try another one, from a different source, it is not unheard of to get a duff battery after all.

Alan

After trying a friends cable and it worked I ordered a new one. Thanks for the help!