The screen is cracked or water damaged. First, assess your screen for physical signs of damage such as a crack, chip, or discoloration. If you notice any signs of this, your LCD screen will need to be replaced. Otherwise, consider that water getting into the device or dropping it could have damaged the images.
11-20-2020 06:00 PM. Hi --. I recently purchased a Canon EOS RP to replace my Canon Rebel T3i. I just tried to use my Neewer NW670 TTL flash with the EOS RP and it does not fire. To be honest it has been a long time since I used the flash with my Rebel but my recollection is there wasn't any trick to get it to work.Aug 17, 2022 at 15:59. 2. @Tetsujin The SB-400 has no settings on the flash itself, it's all controlled by the camera. The flash settings on the camera look normal, the only thing being that the "Zoom head position warning" icon is shown. I suspect that this is because the focal length of the SB-400 is fixed at 18mm, while the lens is a zoom.
Cracked spring on flash module. In the case that the flash module won’t release to allow the flash module to pop up, apply a gentle force to pry it open and inspect the flash latch to see if it is bent or broken. If this is the case then these parts will need to be replaced, if it is not, then the issues lies somewhere else with the module.It seems likely that those very old flashes may not be supported on a 2017 camera. The 400D was launched in 2006, and a lot has changed in 12 years. A 2006 model Canon flash would most likely work - I still use the 430 that I bought in 2008 on my 6D ii, but Canon has zero interest in supporting old 3rd party flashes. gxtrr.