TIMBOOTECH Wireless HDMI Transmitter and Receiver 4K Instructions

Thank you for choosing our product. If you encounter any connection issues, please refer to the troubleshooting steps below. If they don’t resolve the issue, don’t hesitate to contact us. We’re always here to listen and help!

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Precautions & Troubleshooting Issue

1. How to connect transmitter and receiver?
   Step 1: Connect the cable with antenna to the RX and plug it into a power outlet using an adapter, then plug RX to HDMI input device.
   Step 2: Select your preferred language.
   Step 3: Connect the USB C cable to the TX and plug it into a power outlet using an adapter, then plug TX to HDMI output device.
   Step 4: Wait for 5 seconds to pair. The device will then automatically mirror.

2. How to re-pair?
   Step 1: Press and hold the middle button on the receiver until the screen displays “release the button”.
   Step 2: Press and hold the middle button on the transmitter until the indicator light is off.
   Step 3: Wait for 5 seconds until the screen shows “Paired is OK“, and the device will automatically mirror.

3. How to connect phone/tablet/laptop to TV/monitor/projector?
   Step 1: Connect the cable with antenna to the RX and plug it into a power outlet using an adapter, then plug RX to HDMI input device.
   Step 2: a. For Windows devices: Press Win+P to find the mirror function and select “RX-BF3AE0BF”. Wait for it to automatically cast.
   b. For Android devices: Find the mirror function and select “RX-BF3AE0BF”. Wait for it to automatically cast.
   c. For iOS devices:
   Go to the iPhone’s Wi-Fi settings and select “RX-BF3AE0BF”.
   Click on the website and access the IP address “192.168.203.1”.
   Click on “Internet” and choose your home Wi-Fi network and enter the password.
   Tap on Airplay and choose “RX-BF3AE0BF” to automatically stream.

4. The wireless HDMI transmitter & receiver are not working properly.
   Cause 1: The pairing between the transmitter and receiver has been disconnected.
   Solution: Please re-pair the transmitter and receiver.
   Cause 2: The antenna signal of the receiver is not being properly received.
   Solution: Please reinsert the connection sequence of the receiver in the following order. First connect the cable with antenna to the RX and plug it into a power outlet using an adapter, then plug RX to HDMI input device.
   Cause 3: Insufficient power supply.
   Solution: Please try to connect to a power outlet through an adapter to power the transmitter and receiver separately.
   Cause 4: The transmitter supports up to 1080P output. If the HDMI output device defaults to outputting 4K, the transmitter cannot normally transmit the picture.
   Solution: Please modify the HDMI output device resolution to 1080 (computer, etc.).

5. Unable to pair, no SSID or password appeared on the blue screen interface.
   Cause 1 : The antenna signal of the receiver is not read normally.
   Solution: Please reinsert the connection sequence of the receiver in the following order. First connect the cable with antenna to the RX and plug it into a power outlet using an adapter, then plug RX to HDMI input device.
   Cause 2: Connect the wrong cable for receiver
   Solution: Please make sure that the TX is plugged into the USB C charging cable, and the RX is plugged into the antenna & USB charging cable.

6. The screen frequently returns to the initial screen
   Cause 1: The computer enters sleep mode.
   Solution: Set the computer not to enter sleep mode.
   Cause 2: Insufficient power supply.
   Solution: Please try to connect to a power outlet through an adapter to power the transmitter and receiver.

7. Stop working, and then can be used after a period of time.
   Cause 1: When using this product for a long time in an unstable power environment, the product temperature will be abnormal and overheat protection will be activated
   temporarily invalid.
   Solution: Please try to connect to a power outlet through an adapter to power the transmitter and receiver separately to ensure stable power supply.
   Cause 2: The connection port of household equipment has aged or failed.
   Solution: Please connect other devices or HDMI interfaces for testing.

8. Stuttering occurs when playing videos.
   Cause: Since this product uses a wireless transmission system, images/sounds may be interrupted due to wireless radio wave environment. When there are many wireless connections (such as Wi-Fi) nearby, channels in the same frequency band may become congested.
   Solution:
   1. Enter the receiver setting page (192.168.203.1) and try to select 5G and the farthest channel for improvement.
   2. Ensure that the receiver’s antenna is not obstructed by equipment or the TV. For better signal stability, please move the antenna away from behind the TV. The fewer obstacles between the transmitter and receiver antennas, the more stable the signal transmission will be.

9. Only transmit images, no sound.
   Cause 1: This product only supports 2.0 stereo sound and does not support 2.1 stereo sound, 5.1 stereo sound, 7.1 stereo sound, Dolby Atmos sound.
   Solution: Please check your audio settings on your output device. Change it to 2.0 stereo sound.
   Cause 2: Modify the audio output source of the laptop.
   Solution: Please enter laptop audio settings and select “RX-BF3AE0BF” as sound source output.

10. Unable to display in 4K
    Cause 1: This product only supports mobile/tablet screen casting in 4K. If you use a transmitter for HDMI signal transmission, it only supports up to 1080P output.
    Solution: Please modify your HDMI output device’s resolution to 1080P (computer, cable box, etc.).
    Cause 2: The resolution of the receiver is set at default factory setting at 1080P. You need to enter into receiver background settings to adjust resolution
    Solution：
    1. Use your phone’s wifi settings to connect with receiver.
    2. Open your phone’s browser and enter into192.168.203.1，to enter into receiver’s setting page. Click【resolution】,choose【3840x2160p】

11. How to change language?
    Solution：Please hold down on receiver for more than ten seconds for initialization，then you can re-enter language selection page.

12. Why my screen is black?
    Cause: RX was plugged to a wrong HDMI output port or choose a wrong HDMI channel.
    Solution:
    a. Please connect the RX to the HDMI port of your selected HDMI channel.
    b. If the HDMI port number and channel has no problem, please test the RX with the other monitor.

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