Marine Electronics Questions? Ask a Technician for Answers ASAP
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Bubbles around the edge of the screen are a sign of aging, and that the screen and the device have been exposed to heat for a considerable time.
As for the screen moving at an angle... perhaps that is caused by video circuitry having a wrong horizontal frequency setting, but this is not likely unless your Humminbird device has a CRT display! and I sincerely ***** ***** unless it is *very* old.
Perhaps you mean, that the whole display looks tilted? as if it needed to be rotated slightly in order to be square with the case?
Let me know what you mean by the screen moving at an angle, in a little more detail, and also let me know how old this 957c device is. Use Reply To Expert to reply to me. Thanks.