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Re: I have hx4700
Try a hard reset, this is described on HP's troubleshooting guides on their website. If that fails, it's likely the unit is defective - check your warranty with the unit and hope it is in warranty. If so, return it to HP for repair. If not, get a quote on a repair and see if it's worth it.
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I'm a pc repair technician, and my ipaq hx4700 has gone exactly the same way.
I've been looking round for some kind of technical manual to see if there is any history of internal components going down through heavy use or even manual abuse.
Mine stopped after I knocked it whilst working on something.
Normally if I see similar symptoms on a pc I'd be looking at internal component failure, more often than not the motherboard itself. I worked on that theory and have looked at prices for an ipaq motherboard.
In all honesty the costs for the part and replacement are more than buying a new pda.
Sorry for the bad news, but thats the only option I've found
all the best
The problem you have is related to the battery's nominal tension value. For the pda to light up the amber led dispaying that the battery is charging the tension value at the battery pins must be above 3.27Volts. If this is under that value the PDA's charging circuitry woun't power up and therefore the amber led woun't turn on.
The battery you have bought is probably defective or not compatible with your pda model.
If you are shure this is not the case or if the battery works with other pda's (if you have the possibility to check that), try a master reset at first and if this doesn't help try a firmware (ROM) update, you may find the ROM files on HP's site. For more informations please reply back.
The automatic brightness feature is useless to me because of two reasons.
First, it is too dark to start with.
Second, it does not respond as fast as I like to see.
I end up using only two default settings- Battery or AC mode.