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Vtech i5808 Cordless Expansion Handset Questions & Answers
Vtech 5808
This model of phone have serious problem regarding the battery. This phone use a lot of juice out of the battery. I'm pretty sure that when your battery is foul charge it doesn't do it. So the problem is in the handset. When your battery starting to get to low you loose your connection. Why?...Because the detection to LOW_BATT in your handset is not calibrate adequately. So it thinks that the batt is weak, to weak to make a conversation.
The other problem could be that your handset doesn't really foul charge your battery. So when you are to far from the base or talking for to long . There's not enough power in the battery to raise the output signal level(db) to your base.
Vtech phones loosing connection to base
You are pretty close to the solution. The problem is the charge detection in the handset. All handsets on a cordless phone detect the battery level with an hexadecimal value in the memory. Each hex value equal a volt value of the battery. EX: 3.5v = 9B
3.6v = 9C 3.7v =9D etc... The problem is the hex value in your defective handset are all mess up. So 9B is not 3.5v anymore. Then your handset could last 1hr after foul charge or doesn't alert you before the phone goes dead due to low BAtt.
We are having similar problem with vtech 5808
Install new batteries! Be sure to let them charge fully (overnite) before first use.
I have 5 of the i5808 expansion phones around my house - most about the same age - and they all started acting up ithin a few months of each other. I "experimented" with a new battery for one, and it solved the issue for that one phone...so I replaced the batteries in each of the others that were experiencing the problems. This was about 2 to 3 months ago, and all phones have been problem-free since the new battery installs!
Hope this helps.
Vtech 5808
Hi it sounds like the problem is with either the base unit board or the board on the phone.
Do you have one main phone plugged into phone socket and the other two are extra phones that just plug into mains and pick signal up off the main phone if this is the case then the problem will be with the main base unit.
So first thing i would do is check the cable to the phone from phone socket is secure and hasnt been trapped under furniture or somebody triped over it and damaged the wire.
If this is not the case then the problem will be with the base unti itself and as the waranty has ran out this usually means that the phone was only really supposed to last untill this time this is the same with most electrical unit you buy.
The problem could be something as simple as a bad solder on the main board near where the signal is sent from the base.
I would say that the actuall phone is not to fault because if the main phone was at fault then the other 2 would work fine.
If you are ok at taking electrical units apart and can test the board near the signal output on the base it might just be that the solder has failed after this time.
If the phone works for a short while before it dropps the calls then it more than likely is a solder problem the thing is it is difficult to get a spec sheet for these phones i will look and if find one let you know.
Have you tried plugging a different phone into the phone socket to eliminate a problem at the phone exchange let me know how you get on and ill let you know if i find anythnig for you ok
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