If your ULTRA CRYSTALSKY 8.75 fails to light up i.e you hear clicks but can’t see any image on the crystalsky display ?
Don’t dispair - try this quick fix
1. Press the first and last button for a couple of seconds
Reset complete

Thanks for sharing your experience with us. It is also recommended to update the firmware to the latest version as the temperature control logic has been optimized, you may find it in the release note: http://dl.djicdn.com/downloads/C ... e_Notes_EN_0525.pdf
If there are any further questions, feel free to contact us.