Here's an option worth considering. Call Lowrance and see if they have any rebuilds for sale. I've done that in the past and saved big bucks; however, the GPS option may not be available.

Be careful about buying Lowrance products without varifying compatibility. I wanted to link a Lowrance GlobalNav 310 antenna to my 350, but according to customer service, it wouldn't work.

So now I'm selling both my 350 and a NIB GlobalNav 310. I need to find one unit instead of two.