One of the wires in your power cord could be broken. If you have the
a/c adapter, see if you can power up with that. If you know someone
else with a working Magellan, you could borrow his cord to test your
If not, check the car adapter with a continuity tester. Put one tester
probe on one of the side springs of the car plug and the other probe on
the outside metal of the GPS plug. If that shows continuity, place one
tester probe on the end tip of the car plug and the other inside the
the GPS plug.
If either of those do not show continuity, first take apart the auto side of the cord. Check the fuse and the wire to contact solder joints. If they seem okay, carefully cut back the molded plastic from the GPS end and examine the wire to solder joints. If any are broken, replace the cord or resolder the joints.
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get a new unit like any magellan mastreo series 4000 or higher or roadmate 800 or higher,i had a 700 they start having alot of problems after i did my research on here.i have the mastreo 4000 and the roadmate 800 both work great.
The most obvious question is, have you accidentally turned down the volume to a level where it can't be heard. There is a volume wheel on the unit. Also, there is a way that the sound can disappear if the unit gets "locked up". But that shouldn't be a persistent problem. Removing the power cord and reinserting it should clear that problem.
The flash card hole is supposed to be empty - all you need should be on the hard disk BUT the first Roadmate 700 I purchased was empty i.e. no software loaded. The second failed due to bad power connection, the third worked but was factory refurbished! what a crass organisation Magellan is!!!
Try fiddling with the power connection that goes into the cradle that the unit sits on. The power connection is ultra sensitive. BUT, if you've only just bought the unit then you are in luck - return it and get your money - back Magellan Support is extremely poor.
I am binning my Roadmate and getting a Tomtom720 Go series with maps and cameras preloaded - it auto updates when it is on its cradle attached to my PC/internet.
Cigarette lighter plug problems are not uncommon, and - hopefully - this is the source of your problem.
Because the green LED on your plug is lit, it would suggest that the FUSE inside is okay. Still, it's worth checking! The plug is easy to open, and the fuse easy to inspect/replace.
IF the fuse is okay, the cord itself or the plug end that attaches to your Roadmate could be damaged. In order to determine this, you would have to check for voltage at the output end. But, you'd need a circuit tester and a wee bit of electronics knowledge to test it.
If you don't have access to a tester, then the easiest test is to simply purchase a NEW cigarette lighter cord. You can get them at most retail discount stores (BestBuy; Circuit City; WalMart; etc.); RadioShack; or directly from Magellan. They're generally less than $10.00!