[
    {
        "role": "user",
        "content": "i%20have%20a%20problem%20with%20a%20brand%20new%20cord%20mojo%202%204.4%20DAC.%20I%20plugged%20my%20iPhone%20into%20it%20using%20a%20reliable%20USB%20C%20cable.%20i%20plugged%20earphones%20into%20the%20DAC%20which%20I%20tested%20and%20are%20good%2C%20using%20a%203.5%20mm%20connector.%20i%20power%20on%20the%20DAC%20which%20is%20fully%20charged.%20there%20is%20no%20audio%20that%20comes%20out%20of%20the%20Mojo.%20I%20am%20blind%20so%20I%20don%27t%20know%20what%20lights%20are%20on.%20I%20turned%20up%20the%20volume%20and%20it%20made%20no%20difference.%20what%20can%20i%20do%20to%20get%20it%20to%20produce%20sound%20through%20my%20earphones%3F"
    },
    {
        "role": "assistant",
        "content": "Here are several steps you can follow to try to fix the issue of \u201cno audio\u201d from your Chord Mojo 2 when connected to your iPhone. Since you're blind, I\u2019m also including tips to help with locating buttons or LEDs by touch or feel.\n\n---\n\n## What to Check First\n\n1. **Ensure the Mojo 2 is charged**\n   - If the battery is empty, the unit may not turn on or might rapidly shut off. The user manual says that if Mojo 2 is fully depleted it may need overnight charging with the unit switched *off*. ([chordelectronics.eu](https://www.chordelectronics.eu/index_htm_files/Mojo%202%20User%20Manual.pdf?utm_source=openai))\n\n2. **Confirm Mojo 2 is powered on**\n   - There is a power button; press and hold to power it on/off. ([chordelectronics.co.uk](https://chordelectronics.co.uk/wp-content/uploads/2022/01/Mojo-2-user-manual-V.1.2.pdf?utm_source=openai))\n\n3. **Use a proper cable**\n   - If your iPhone uses USB-C (recent models), use a USB-C to USB-C cable that is known to support digital audio signals. Some lower-quality cables (especially non-certified or thin ones) may not work. ([moon-audio.com](https://www.moon-audio.com/products/chord-mojo-dac-headphone-amp?utm_source=openai))\n   - If your iPhone has a Lightning port (older models), you need Apple\u2019s Camera Connection Kit (CCK) adapter to tell the phone to send digital audio out. ([moon-audio.com](https://www.moon-audio.com/products/chord-mojo-dac-headphone-amp?utm_source=openai))\n\n4. **Check that Mojo 2 input mode is correct**\n   - Mojo 2 has multiple digital inputs (USB-C, micro-USB, optical, coaxial). If more than one input is connected it auto-selects based on priority: USB, then coax, then optical. If your cable is plugged into the wrong port, it might not be using the correct input. ([device.report](https://device.report/m/36a895a1023c2d2f3ca320ffef24552ab4e6c708f9b67faff1ee7587bb605cb4?utm_source=openai))\n\n---\n\n## Steps to Diagnose / Fix\n\n1. **Locate the USB-C port on Mojo 2**\n   - Feel around the back or top edge: there should be a USB-C input labeled \u201cUSB-C input\u201d (not the micro-USB charging port or other inputs). That is where your cable from the iPhone should go. ([chordelectronics.co.uk](https://chordelectronics.co.uk/wp-content/uploads/2022/01/Mojo-2-user-manual-V.1.2.pdf?utm_source=openai))\n\n2. **Check if the iPhone \u201csees\u201d the Mojo 2**\n   - On iPhones, if a proper digital output device is connected, a tiny indicator briefly appears on screen (\u201cUSB audio device connected\u201d, or in some apps you should see Mojo 2 as a selectable output). If nothing shows, likely cable, adapter, or port issue.\n\n3. **Adjust volume both on iPhone and Mojo 2**\n   - Make sure volume on the iPhone is up and not muted or set to zero.\n   - On the Mojo 2, there are two buttons \u201c+\u201d and \u201c\u2212\u201d for volume: the plus increases, the minus decreases. Press + a few times to ensure it\u2019s up. ([chordelectronics.co.uk](https://chordelectronics.co.uk/wp-content/uploads/2022/01/Mojo-2-user-manual-V.1.2.pdf?utm_source=openai))\n\n4. **Listen for LED cues**\n   - Although you can\u2019t see them, asking someone to check, or learning where the LED is by touch, can help. In general the main power button LED changes color depending on several things:\n     - Whether something is plugged in via USB\n     - What the sample rate of the stream is\n     - Whether the unit is charging, etc. ([chordelectronics.co.uk](https://chordelectronics.co.uk/product/mojo-2?utm_source=openai))\n\n5. **Ensure the earphones are fully plugged in**\n   - The Mojo 2 has two 3.5 mm outputs (they\u2019re physically on the side/top\u2014feel for the jacks). Make sure the jack is firmly inserted. Some people report poor mechanical connection or loose seating. A proper plug should click or stop firmly.\n\n6. **Test with different content / apps**\n   - Try a known working app (like Apple Music) that you know definitely plays audio.\n   - Try streaming from the phone vs local file to rule out app issues.\n\n---\n\n## If It Still Doesn\u2019t Work\n\n- **Try a different cable** (especially high-quality, certified one).\n- **Try a different adapter** if your iPhone is Lightning (use the official Apple adapter).\n- **Try different earphones or headphones** to rule out output issue.\n- **Contact Chord support**\u2014they may help debug LED status, cable compatibility, or any known firmware issue.\n\n---\n\nIf you like, I can walk you through a step-by-step audible-based test to locate buttons or LED positions by touch, to help ensure everything is set up correctly. Would you prefer to go through that?"
    }
]