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- if someone has used the wrong charger, and connected it to a 12V supply, the mainboard may be damaged. In that case, you need a replacement.
- the battery may be discharged. Even if the green light is on, it doesn't necessarily charge up. Try pushing it hard onto the mount for a few minutes, then see if it will turn on.
Yes, possibly a cracked pc board if the unit was dropped. But check to make sure that the charging unit's connector is clean as well as the unit to be charged. I had a problem with my wireless phone and a PDA not charging because of dirty contacts. I got to the contacts using a long Q-tip moisten with Isopropyl alcohol and scrubbed them clean. I now do it about twice a year. No problems since then. email@example.com
Well it looks like your'e an investigative type of guy and you digging around is getting to the bottom of your problems. I think you are very much on track and narrowing the possibilities and your last sentence brings out down to just 2 possibilities . I think logic is telling you that downloading voices won't cause a charging problem . I agree , voices can cause wierd things to happen software wise and I know this becuase I ahve seen it several times myself. Especially where it makes the screen look damaged. I had a tomtom one V2 here that ended up with a green only screen with black lines down it and that turned out to be a corrupted celebrity voice file. I never found out which voice it was but just deleted all the celebrity voices and hey presto the screen came back to normal.
Anyway , back to your problems. I see no logical connection between downloading voices and a charging issue . The battery charges by physical connection and regulation through electronic components and also becuase it charges the battery even whilst the TomTom is switched off then we can be confident that any software has no influence on battery charging. This tells us that out of the 2 possibilities you have narrowed it down to it must be a "contact" issue. Also because you wasn't aware of the release button you were actually disenguaging the TomTom from it's mount incorrectly. So, to sum up : .... we have .... 1/ cause ..... 2/ symptoms ...... 3/ cure ... = new car mount required.
The rubber bungs often come out but it doesnt usually effect the charging although the rubber bung is there to help reduce vibration when used with a mount in a car. I have had many 910's here in the past with the bungs missing but never had any problem with them latching into the mount. I would think your problem is either some other plastic part is worn or broken. However , if you feel that the problem is the bung then I would go with your instinct but you might have to find something else to fit in the hole as parts are not readly available for TomToms unless you buy a whole unit thats faulty to use as parts / spares. Im'e sure something could be made to fit possibly part of an eraser or similar rubber part. You might also be able to use a small rubber cable grommet or similar.
As far as I know , it isnt possible to get a virus on to the TomTom as such but it is possible to get corrupted data on the hard drive ( or SD card with other models ) especially if you download things such as voices etc. I have had TomToms here were owner has downloaded comic voices and the files have caused very strange things to happen with the TomTom. I even had one where a voice file was making it look like the screen was damaged , so , your'e correct in thinking that way. In your case though , I doubt if the dowloaded voices have effected the charging , its more likely the poorly fitting mount thats casuing your problems.
If you manage to get the green light on ( this only shows power is going to the TomTom , it does NOT confirm charging ) then leave it for a few hourse before attempting to turn the TomTom on as that will ensure a resonable amount of charge especially if you battery is very flat.
Hope this helps . ( please rate the above reply if you think its helpful in any way )
In general I find these sort of problems can be fixed by the below
If the Tomtom loses battery power it might cease to function with a blank screen but will show a green light when you charge it. The trick is charge it on the mains charger for at least two hours. Then reset the device with a paper clip. If you get no reponse hold down the on button for at least 20 secs and the device will show the Tomtom logo and play a drum roll and startup normally.