Unit worked well this morning - docked all weekend. Colleague couldn't power his 4700 up. Offering help, I took battery from mine and put it into his. Didn't work. Worse, I put his battery into mine. Didn't work - now they're both dead. Both batteries have full charge. Soft resets (Stylus in the end) didn't work, Hard resets - (hold two keys + stylus in the end) didn't work. Neither unit powered up when docked (tried three docking stations). Neither unit powered up when docking station bypassed and plugged direct to A/C for charging. No charging lights, nothing. Dead... Lastly, I tried removing a media card and re-inserting it (which usually forces powering on) - nothing.
How to correct iPAQ 5450, 5455, 5550, 5555 battery charging problems / dead unit syndrome.
The iPAQ 54xx or 55xx will not power on if the batteries charge is lower than 3.2 Volts, if your battery charge falls below the 3.2 volts level your unit will not turn on, you need to plug the iPAQ into a cradle or AC charge adaptor. Note the charging light on the iPAQ will not flash at all (normally flashes orange) until the battery charge has reached a minimum charge level of 3.2 volts. You then need to perform a normal reset, then the unit should switch on normally.
HP Procedure is as follows:
To charge and reset the iPAQ Pocket PC h5400:
i) Connect the iPAQ Pocket PC h5400 to an A/C power supply. ii) Charge the battery to the minimum level of 3.2 Volts. This will take 5 to 30 minutes depending on the current charge level. iii) Perform a normal reset. iv) Power on the iPAQ Pocket PC h5400
It is recommended that you keep the iPAQ Pocket PC connected to the Universal Cradle or Cable when it is not in use.
The AC charging lead adaptor looks identical to the adaptors used for other devices. The internal wiring in these adaptors is not consistent. I know from bitter experience that using an XDA2 adaptor on a hx4700 will burn out the printed circuits on the motherboard.
When you insert the battery inthe hx4700, the battery lock must be in the locked position.
This lock closes a microswitch inside the PDA. If the microswitch is not closed, then the PDA will not do anything, including power-up, charge the battery etc.
Unfortunately, the microswitch is very tiny and (in my opinion) quite feeble - definitely not up to the job, especially if you remove and replace your battery frequently (many people carry spare batteries). On my hx4700, this switch failed. At the time, I just assumed the whole thing was dead and bought another off ebay. The same thing happened with the second one. I guess the switch can be replaced (at some ridiculous price). I read somewhere about somebody who permanently shorted out the connection by soldering a wire across the switch terminals and it had no ill effects. I wouldn't necessarily recommend it though.
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I also own an ipaq 4700 and experienced the same problem. Even after reloading the OS I continued to have this problem. I did buy it refurbished but I fear this may be a common hardware problem. From my research it would appear the battery is the most likelyculprit, I have not tried replacing mine but it may be worth a shot, if nothing else you have an extra battery which means less time at the charger :D
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 )
stevi at the back of your tom tom where your windscreen dock goes there is a small rubber bumper if you look to the right and down you will see the reset button it is a small hole above the dock socket. sandy
Just disable the settings where it says to turn off the backlight & PDA power after certain minutes and set your standby time (in power battery setting) to 0, then leave your PDA on until it fully drains (usually a week or two).
are you checking your adapter. i had the same problem with my casseopeia e115. i searched and searched for the battery which even casio doesn't offer anymore. i bought a battery pack which works great w 4 AA batteries but it's bulky and you lose data when you turn off the batteries. i finally went on to discover that my charger/adapter that plugs into the e115 and the serial cradle was scorched by a lightening strike and it was not charging and eventually the batteries DIED!!! I took the adapter to an electronics repair store and for $15.00 they rewired the adapter and it works!!!! it charged the batteries and worked fine.(altho i have to visit them again because i think one of the new wires is bent and i have to position it perfectly to keep charging.) BTW: any one looking for a new casio battery jk210lt...i have a couple to sell! ;-)
hope this helps