The Problem with the Volvo Penta Instruments screen
In many cases with the screen problems I see in the Marina, sailors buy a new instument at + 600,- €
The Volvo Penta instruments are equipped with thin (1mm) double plexiglass, with a few millimeters of space in between. After only a few years, the first layer becomes brittle, yellow and difficult to read. Possibly you might even have some water between the two layers. You can remove the front layer with a sharp hot knife. As you can see on the picture below, the front layer on the right-hand has been removed.
On the right-hand device only the back layer is left, now it is readable again, but the back layer is even thinner and more fragile.
The solution is to pour a layer of crystal-clear epoxy on the bottom layer.
Below the finished devices , strong, scratch-free and UV resistant.
Better as new.