C70 Multidisplay repair (2007 model)

[SYBruce]

My adjustment button (or the display) doenst work properly. If I try to dim the light with it, it may adjust contrary to how I turn it or stay locked at a certain level. If it gets locked at night level then I need to shut the instrument off and turn it back on to get normal light level back.

Also the screen´s surface protection is somehow in a poor condition.

Any good advice on cleaning and/or changing in both cases?

Some may advise me to buy a new display, but the C model is, as you may know, discontinued and buying a never display model also implies buying and installing a new digital radar. It is just to expensive and all the rest of my instruments work fine with it.

Claus