To determine if your Nuvi's switch is broken with no other issues, please confirm the following: 1. Pressing the on/off switch has no effect and the switch feels mushy when pressed - no soft click. 2. The unit powers up and operates normally when using the car adapter or USB adapter and can be turned off by pressing the reset button. If the above conditions appear to be the symptoms of your Nuvi 350, then most likely, the on/off switch has broken off from the main printed circuit board. use these guides to help It's very unlikely that the switch itself is bad. The life cycle of this switch is 250,000 cycles. For example, if you pressed it 20 times per day for an entire year, that would add up to 7,300 presses per year. Divide 250,000 cycles by 7,300 and it would take 34.25 years before the switch would fail. No doubt the switch will outlive the Nuvi itself. Taking the Nuvi apart itself requires the right tools. The internal flex cables for the antenna, touch screen and LCD screen are delicate and can be...

i have to agree most of these types of batteries will develop a memory,when you dont fully run battery down an then charge back up alot the battery will soon remember an only hold 1/2 to 3/4 charge best bet is to replace battery thanks everyone this is a great site...