My Tom Tom 510 will not turn on at all. I plug in the power supply and the green light comes on. I used it yesterday and this morning, and all was fine, tried using it 1 hour ago to travel home and nothing. I have tried to plug it into my home computer, again light comes on but will not register.

charge48 hours at first then at least 2 hours for 1 hour of use.- 4 years is a long time stored batteries may be bad

Hello,
The first thing to try is to cycle the power. To do this, unplug the power cord from the back of the PC and press and hold down the power button on the PC for 5 seconds. This will completely drain any "stuck" power in the components. Now plug the power back into the PC and try booting. If it still does not come back on after this, then you may be dealing with a blown power supply. You can buy replacement power supplies from your local PC shop for about $50 for a 400watt.
To protect your devices in the future, make sure you have a good surge protector and / or a UPS (uninterrupted power supply).
Regards, Chris

check power supply voltage, battery seating, and try re-sitting memory cards

probably a power supply problem,modern tvs use switching power supplies. these power supplies sometimes fail after a long period of use due to the constant charging and discharging of the capacitors

Same here and with aftermarket mount. The light comes on but its not really charging. I was acutally able to find a sweet spot basically by pushing it down and to the right slightly (into the base) and held it in place with left hand and put the unit in the upper left part of the windshield, elbo in the window frame and move the unit around until the low batter warning dissappears, then don't move. Theres a specific screen that will tell if its charging or not if you tap the lower right part of the screen after booting up if you can get that far. I forget what it was, I think displays speed and miles to go. (But definatley hold the whole unit down and to the right and hold it for a while so it can charge up a little.) Then try turning on and you should have enough power to tinker with it. I would up putting the tom tom in the upper part of the windshield, then stuffing balled up napkins between the roof and the unit to keep pushing it down.

I also plugged it in the the original computer hook up base to see if the problem was on the winshield one or the tom tom itself. Both chargers do it so I am assuming that its the tom tom itself. I still CANNOT figure out why the charge light could be on and still not charging.
I am going FRD and taking it apart. (Fix Or Destroy) Since they are getting pretty cheap, nothing to loose I guess.
Thanks back to all the posters on this site!!

solution was posted here

tom tom kicked reset button[510]called customer assistance. use paper clip bent to a point turn unit upside down so ser# can be read you will see one gold ternimal on left side and about a dozen small terminals to the right just above last three terminals is a notch in plastic cover reset button is in middle of slot push with paper clip two or three times not overly hard.mine started working.when plugging to cig. lighter button kicked.easy fix hooray for TomTom.hope this helps.greetings from Music City.

www.batteryship.com

look up tomtom 510 - or whatever model you have
Order the battery..........comes with manual and tools to fix it
only 20.95
it works

cheaper than sending it in!!!!!!
These are genuine replacement parts!!

Laura

Try resetting it

There is a reset button (hole) underneath by the plug-in bar. It is real small, you'll need a small paper clip straighten out