I've had my Sony A7s for a year now and within the week of getting it noticed that I had a hot pink dead pixel smack dab in the middle of my sensor..I noticed this while reviewing footage after a long day shooting a short...
I was pretty upset but mostly just because my brand new camera had a dead pixel on literally the first thing I used it on
After doing some digging I found that the camera doesn't have a setting to fix this like other cameras but you can force the camera to remap the sensor which will remove the dead pixel
I made a quick video showing how to do so:
https://youtu.be/LP1M7vZRwb0
I've known about this for a year now but just never got around to making a tutorial
I've had atleast a dozen hot pixels so recommend doing this every time you are about to use the camera for a shoot
Hope this helps someone