Raymarine 850 Series

[ahill]

I'm looking at a '97 Marlin with Raymarine 850 series depth finder, raster radar, GPS and VHF. All Separate units. Haven't checked them yet as I'm in early stages. What should I look for in the way of problems?
Thanks

 

[cgmiller]

My first 26 Shamrock had a Raymarine V850 sounder and it was a great unit....