THE FIRST 7735 I bought would not turn on. I sent it back.
The replacement worked as soon as I plugged it in.
However it was not very bright.Not bright at all. It is set for maximum brightness, day time only, and is only usable if I keep it in the shaded spot in the truck. If I take the unit outside,in the bright sunlight, the screen is completely washed out.
My wife's Garman GPS is easily read, all the time, even in direct sun light. In fact it's brightness is only set for 80%, and is easy to read.
I love all the features that the 7735 has, but if I can't see the features on the screen,it's no better than listening to a Mother-in-law.
A smart man would have sent the unit back by now, but I was on the verge of a six week trip, and assumed that I could get by if I placed the unit on the floor hump, in the shade. That kind of worked as long as the sun was in the right location, but it caused me to look down at the floor a lot while driving, which drove my wife crazy.
Now I have an almost unusable, smart, $350. GPS, with a couple months left in warranty, and I am facing another 6 week trip this June, and NO original box to ship this thing somewhere (if it can even be made right).