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Pete, Electronic Engineer
Category: Marine Electronics
Satisfied Customers: 17404
Experience:  Over 16 years of experience installing and repairing electronics.
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Have a D-3. 120 Hummingbird Dimension 3sonar. When turned on

Customer Question

Have a D-3. 120 Hummingbird Dimension 3sonar. When turned on screen is very din hard to read or see. Turning the light on does not help very much either.
Submitted: 1 year ago.
Category: Marine Electronics
Expert:  Pete replied 1 year ago.

Hi there,

First, test the power supply to verify that the input voltage is good.

If it is, and the display was previously bright enough to see but has suddenly gone dim, then it is likely that the display is failing and needs to be replaced.

The unit can be returned to Humminbird for repair.

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