Basic Troubleshooting for Built-In Mega Imaging

The Humminbird is not finding bottom when using the Built-in MEGA DI

If your Humminbird unit is not finding the bottom while using Built-in MEGA DI, try the following:

  1. Set the “Max Sonar Depth” on the Humminbird to the lowest reasonable depth for your area. It is recommended to set it 10-20 feet deeper than the maximum depth you expect to use the product in.
  2. When the trolling motor is in the stowed position and the Humminbird is powered on, the unit will continue to ping and search max depth which puts several seconds between pings. Leaving the sonar turned on while the transducer is out of the water can cause damage to both the Humminbird and the transducer sonar element.
  3. It is recommended to turn the Humminbird sonar off while the trolling motor is stowed or the out of the water. To do this, press the power key during operation. A menu will appear that will allow you to turn the sonar on/off.

The Humminbird only displays a black screen when the trolling motor with Built-in MDI is connected

There could be a few reasons for this:

  1. Has the Humminbird software been updated? G2N models for instance, require an update to function correctly with the Built-in MDI. You can find the latest update for your Humminbird unit at humminbird.com/support/software-updates
  2. Verify that the Humminbird is set to use the “Built-in MDI” in the transducer settings menu.
  3. Check the transducer adapter cable connection to ensure there is no loss of signal. Check the transducer connection in the control box as well.
  4. If the Built-in MDI transducer is not submerged in water, the Humminbird screen will appear black. When the trolling motor is in the stowed position and the Humminbird is powered on, the unit will continue to ping and search max depth which puts several seconds between pings. Leaving the sonar turned on while the transducer is out of the water can cause damage to both the Humminbird and the transducer sonar element. It is recommended to turn the Humminbird sonar off while the trolling motor is stowed or the transducer is out of the water. To do this, press the power key during operation. A menu will appear that will allow you to turn the sonar on/off.
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