Hello all I have a second back up garmin 3210 that has a burnt out back light in it. The unit powers up fine and gets signal but the screen does not light up. I was told it could be just a simple fix or a bit more detailed. I called garmin and they told me that they no longer have any spare parts in stock for that unit. Any help would be great I am not sure who to call or who I can trust to fix this machine.