Troubleshooting Common Fish Finder Display Problems

Fish Finder Guides

The Unit Shuts Off at High Speed or When Motor Is Started

This could be because the voltage to the unit is dropping below or exceeding what is required for it to function. There could be several reasons for this, including:

  • The battery is not completely charged.
  • When the engine is running, your boat’s battery charging system may not be functioning properly.
  • There are too many devices plugged into the same battery, and the power to operate the fish finder is insufficient.
  • The connections between the battery and the fish finder are either broken or missing.

Screen Goes Dark

If the device turns on but the screen goes dark, the backlight may be turned off. To reactivate it, press and release the power button several times to brighten the screen. By pressing the power button once and turning off the device, you can save the setting.

Noise Interference Cause Display Issues

Do you have any strange lines or ripples on your screen? Look for electrical noise interference. Turn off all devices on the boat and then turn them back on one at a time, beginning with the fish finder. The device or devices interfering with the signal will be identified.

What If You’re Still Having Display Issues?

If these solutions do not resolve your screen issues, there are a few more options to consider.

  • Check all electrical connections to ensure they are secure.
  • Finish all software updates.
  • Use soap and warm water to clean your screen (never use abrasives).

If none of these fixes the problem, you may need to reset the device. Before attempting a hard reset, always follow the manufacturer’s instructions and perform a soft reset.