I have a fruno 587. It's developed a air bubble under the screen, to expensive to fix it was advised just to replace it. Now it's still working, I'm unsure what life expectancy is, so if anyone interested in it make me a offer.  It has the original power cable, no transducer cable as I've kept it for the new model.  Have receipt and instruction manual.  The photo show the bubble around the top edge of screen and down the sides.

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