Troubleshooting: No Red Light Above the Flywheel (Normal Status: Solid Blue Light & Flashing Red/Green Lights)

Step-by-Step Hardware and Connection Check (If Casting Fails)

Step 1. Verify signal cable connections

• Ensure speaker audio cables and bike screen signal cables are not reversed.

   

Step 2. Check mainboard–screen connection

• Connection may be loose or not fully inserted due to assembly issues or transport vibrations.

• Inspect all connectors between the mainboard and screen:

  • Ensure connectors are tight and properly seated.

  • Check for bent or oxidized pins.

  • Verify there are no reversed connections.

Action: Reconnect cables correctly.
If still not working: Try replacing the cables for testing.

Step 3. Inspect mainboard terminals

• If screen wiring is correct but there is still no signal, check the mainboard port:

  • Remove the screws above the flywheel cover and carefully take off the cover to access the internal components.

  • Look for bent pins, burn marks, or poor contact.

  • Check for soldering issues, such as cold solder joints, detached pins, or burn damage.

Action: Replace the mainboard if damaged.

Step 4. Check device data in the app

• Connect the bike to the YESOULfiteness app and check if the device reports status.

Interpretation:

• No data feedback → mainboard may be damaged, replace mainboard.

• Data is normal → proceed to next step.

Step 5. Determine if the screen is faulty

• If all wiring is correct, the mainboard is functioning, and the app reports normal data, the problem is likely with the screen itself.

Next Steps:

• If the issue persists after replacing the mainboard,  please submit a service ticket to get support from our customer service team. You can submit your request here: Submit a service ticket

• To expedite processing, provide:

  • Order number

  • Product SN code (located on the label between the two foot tubes of the bike)

Customer service will arrange further assistance as soon as possible.