One thing to note about the horizontal line is that they only appear after a cycle power off, power on. This is how I get them 100% of the time:
- Remove battery
- Insert battery
- Power on
- Wait for loading to finish
- Press power for 2 sec (power off/sleep)
- Press power for 2 sec (power on/wake up)
- Voila, horizontal line(s)
- Camera auto calibrates, lines disappear for a moment, and then...:
- Voila, horizontal line(s) again
So if I just remove battery, boot = no horizontal lines...