You can turn off the HDMI HDCP option in the PS4/PS5 settings and the problem will be solved. As for PS3, if you can't turn off HDCP in the settings, you can contact our after-sales email. We will send you the updated software.

https://drive.google.com/file/d/1ew2b5hn50pq8L2zl-wZ_ptyqP2Kmi5Uu/view?usp=sharing

Turn on the HDMI CEC option. https://drive.google.com/file/d/1_EYWIuqviPBMn0McNfEkfPbNm2PPAM8m/view?usp=sha

Please don't worry, it's not that the system is malfunctioning. Your adjusted effect will be shown when you play the video.

It may be because the projector doesn't support Dolby Atmos, you can turn off the Dolby Atmos option in the settings.

(Settings > Display & Sounds > Audio > Dolby Digital Output > and then turn Dolby Digital (OFF).

a. It could be due to a weak WIFI signal (WIFI signals are cut down when going through obstacles such as walls). You can install a WIFI signal booster to solve this problem.

b. Please change the WIFI router encryption format to WPA or WPA2 and set it as the default option.

The problem is that due to copyright restrictions on streaming media such as netflix and prime, when the projector puts in these videos, there is only sound and no picture. Whereas you won't encounter this when projecting YouTube videos because YouTube doesn't set copyright restrictions. (The projector is just the display device, which is a problem with most projectors sold on the market) You can access an Amazon Fire Stick, which can help you out.

Possibly due to poor ventilation where the projector is placed. If the projector's vents do not flow smoothly, excessive heat from the projector may cause the screen to turn yellow/black. (So we recommend that the projector be placed in a well-ventilated place, do not completely fit the wall, and leave a space for ventilation.) In order to better maintain the projector, we recommend to let the projector rest for a period of 3-5 hours. Do not use it uninterrupted for a long time.Compared to LCD TV screens, projectors have a certain lifespan. But please don't worry, if you have this kind of situation, Please send question YABER official email: service@yaber.com

1. IOS screencasting has higher requirements for wifi signals. Unstable signals will lead to searches, disconnection, lagging, screencasting, disconnection, etc. At this time, please confirm the wifi network speed and whether the stability is good!

2. After confirming that the network is normal, restart the phone and projector, and then follow the following steps to confirm again:Wireless screen casting for iphone cell phones:

a. Projector and cell phone, must be connected to the same wifi;

b. Go back to the home page and select the [Airplay] menu and stay;

c. The phone, or laptop open the system comes with the screen mirroring function, the search connection can be.

Specific operation reference links:https://drive.google.com/file/d/1B2Yi1r27rYkjGbVy4TEyCa5L7Wyjmw9a/view

Android phone wireless cast screen:

a. The phone, or laptop open wifi and bluetooth function (you can only open not connected);

b. Projector open Miracast interface;

c. Mobile phones, laptops open the display settings, use the system comes with the multi-screen connection function, search and connect can be.

Specific operation reference links: https://drive.google.com/file/d/1FfhaG9OZuqWS_u3VRRidd34NTH53qEa4/view

If there are still questions about the projector, Please send question YABER official email: service@yaber.com

1. First select reset in settings to restore factory settings;

2. Change the mobile hotspot password to a simple 8-digit number, such as "12345678", and then confirm the connection;

3. If you can connect to the mobile hotspot, then connect to wifi to confirm;

4. If you still cannot connect to WiFi, set the WiFi password to a simple 8-digit number, but still cannot connect, switch to the encryption method, if WiFi6 is not supported, you need to turn off WiFi6 in the router (TP-LINK router turns off WiFi6: Router interface, click Route Settings - Wireless settings - Wireless mode, change 11a/n/ac/ax to 11a/n/ac, etc. to turn off the WIFI6 function.)

5. If you still cannot connect, please contact our Yaber official after-sales email address in time: service@yaber.com

Please trust the quality of our projectors. The spots may be caused by dust on the lens due to impact during transportation or use.

You can remove the cover on the back of the projector and wipe it gently with the included cotton swab!

Specific operation reference video: https://drive.google.com/file/d/1sfg71OwI6O8P_z5_cz5K0-yWoBd938Jg/view

If the problem is still not solved, Please send question YABER official email: service@yaber.com

Possibly due to poor ventilation where the projector is placed. If the projector's vents do not flow smoothly,

excessive heat from the projector may cause the screen to turn yellow/black. (So we recommend that the projector be placed in a well-ventilated place,

do not completely fit the wall, and leave a space for ventilation.) In order to better maintain the projector, we recommend to let the projector rest for a period of 3-5 hours.

Do not use it uninterrupted for a long time. Compared to LCD TV screens, projectors have a certain lifespan. But please don't worry, if you have this kind of situation,

Please contact YABER official email: service@yaber.com

It may be because the projector doesn't support Dolby Atmos, you can turn off the Dolby Atmos option in the settings.

(Settings > Display & Sounds > Audio > Dolby Digital Output > and then turn Dolby Digital (OFF).

The problem is that due to copyright restrictions on streaming media such as netflix and prime, when the projector puts in these videos, there is only sound and no picture. Whereas you won't encounter this when projecting YouTube videos because YouTube doesn't set copyright restrictions. (The projector is just the display device, which is a problem with most projectors sold on the market) You can access an Amazon Fire Stick, which can help you out.

1. Select reset in the projector settings, restore to factory settings and then confirm;

2. Check whether Bluetooth is working with low battery;

3. Because it does not support Dolby, DTS, 5.1 channel, HDMI CEC, ARC and other functions, many sound bars, sound blasters, speaker systems, or devices with Dolby support are Not compatible. It is recommended to use ordinary Bluetooth speakers. JBL GO and Bose soundlink mirco tests can be used normally.

4. You can also purchase an aux audio cable with 3.5mm plugs on both ends, and connect the Bluetooth speaker to the headphone jack of the projector for a wired connection, which can avoid delays and ensure stable playback.

The sound of the projector is loud, but at a constant speed, and there is no abnormal sound like "crack". The solution is as follows:

1. Increase the projector volume to reduce noise interference;

2. The placement environment should not be narrow, and there should be at least 25cm of space on the left and right sides to avoid the fan from accelerating the heat and increasing the noise.

3. If the problem still cannot be solved, Please send question YABER official email: service@yaber.com

Please follow the steps below for automatic keystone re-calibration. (If the problem persists, please contact our after-sales email at service@yaber.com.)

1. Distance must be 2 meters, keep the tabletop stable.

2. Press the "Automatic Keystone" option five times to access the correction interface.

3. The rectangle on the correction interface is the camera view. Make sure the entire image is within the camera view before proceeding.

4. Select the "Manual" option.

5. Press the "Up" button on the remote control, and a prompt box for correction failure or success will appear.

6. If it shows "fail," exit the prompt box and recalibrate by pressing the "Up" button again.

7. If it shows "success," select "save."

Please follow the steps below for checking: (If the problem persists, please contact our after-sales email at service@yaber.com.)

1. Select "Restore Factory" in the settings to reset to the factory settings. The projection range is 1.23 to 6.15 meters, please confirm the distance.

2. The position of the projector should be close to the edge of the platform to avoid surface light reflection affecting the camera's judgment.

3. No obstructions in front of the machine.

4. Check if the machine is directly facing the screen; Too much offset angle will result in blurred edges.

5. If the placement is correct, disable the automatic keystone and focus options in the projection settings. Align the machine with the screen and use the F+ and F- keys on the remote control to refocus.

Please follow the steps below for checking: ( If the problem persists, please contact our after-sales email at service@yaber.com. )

1. Select "restore factory" in the settings to reset to factory settings.

2. Check if the Bluetooth is operating with low power.

3. Pro V9 doesn't support Dolby, DTS, 5.1 channels, HDMI CEC, ARC, etc., many soundbars, subwoofers, speaker systems, or devices with Dolby support are not compatible. It's recommended to use regular Bluetooth speakers such as JBL GO or Bose SoundLink Micro, which have been tested for compatibility.

4. Alternatively, you can purchase an aux audio cable with 3.5mm plugs on both ends to connect the Bluetooth speaker to the projector's headphone jack for a wired connection.

Please follow the instruction below to clean the dust in the projector: (If the problem persists, please contact our after-sales email at service@yaber.com.)https://drive.google.com/file/d/1uG_xinQF4EdrjS0y8p_Z50XvvWgMXxol/view?usp=share_link

Please confirm you follow these steps for WiFi connection: ( If the problem persists, please contact our after-sales email at service@yaber.com. )For IOS device：

1. The projector and the iPhone or laptop must be connected to the same WiFi network.

2. Open the iOS cast interface on the projector.

3.Open the built-in screen mirroring function on your phone or laptop and search for the connection.

For Android device：

1. Open the Miracast interface on the projector.

2. Enable WiFi and Bluetooth on the phone or laptop (you can leave them unconnected).

3. Open the display settings on the phone or laptop and use the system's built-in multi-screen connection function to search and connect.

1. Play any video source in the HDMI interface as a reference for adjustment.

2. Press the menu button on the remote control to open the Menu.

3. In the image settings, select Picture Mode and set it to User mode to adjust the brightness and contrast values.

1. Due to copyright compatibility issues, screen mirroring from your phone supports YouTube but not video playback from apps like Netflix, Prime Video, Disney+, etc. It will show a black screen with audio only.

2. It is recommended to purchase an Amazon Fire Stick or Google Chromecast, which can be used to watch videos from applications like Netflix and Prime Video.

1. The projector doesn't support Dolby sound, so you need to disable Dolby support in the audio settings of the connected device.

2. Please check which brand of TV stick you're using. Amazon Firestick or Google Chromecast can be operated by sending instructional videos. Screen mirroring has sound but no picture.