New UI Screen of P40: (Factory software version is V3.09): please confirm if your projector your projector software version is: V3.09 (Settings>About>Software version>"U0320-XXX" to check the software version)
Problem: The projector can not be switched on immediately after switching off, but the red light is on normally (standby mode)
Reason: The machine has an automatic protection mechanism, which allows some time for the fan to dissipate heat after switching off the machine. Standby status for more than 5-10 minutes and then turn on the machine.
Method 1. Upgrade Software to solve this problem:
Step 1: Power off for more than 3s
Step 2: Unplug the power cable and restart the device
Step 3: Confirm if the software version is V3.09, and then our seller can provide a V3.11 software upgrade Or please tell us the projector's OTA Screenshots and we will automatically push software upgrades (V3.10) to your device（Settings>About>Online update to check the OTA number)
Note: You'll get a pop-up notification on the screen when an OTA pushes a software upgrade
V3.10 Improvement Points:
1. Switching on/off projector problem solved
2. Add HDMI ARC/HDMI CEC function
3. Optimize focus accuracy
4. Optimize the auto keystone correction function
5. No U and I capital letters in the keyboard problem solved
If you do not want to upgrade the software, then provide the following method:
Method 2. Standby status for more than 5-10 minutes and then turn on the machine.
Method 3. After powering off for more than 3s, re-plug the power cord and then switch on the machine.
If you have any questions during the process, please contact us at firstname.lastname@example.org