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GPSMap 498 Sonar - no backlight

Former Member
Former Member
Hi all. Tried a search, but didn't find anything related.

I bought a boat with a couple of units, one being a 2006C, and the other being a 498. The problem with the 498 is that, when the unit is turned on, the backlight comes on momentarily, and then the backlight turns off. I have made sure that the auto light feature is not on, and I have performed a master reset on this unit, both to no avail.

Any help would be greatly appreciated, as the unit works perfectly, accept for the fact that it's almost impossible to see without the backlight.