Continuing landline problem

[Fiigural]

I've posted on this previously, the problem is ongoing and I'd appreciate suggestions on what might be happening, please. My cordless landline phone has been disconnected from the phone line and power for 48 hours now. The handset is flashing for a split second at intervals between approximately 30 seconds, and three minutes. Two of us have been monitoring this with the stopwatches on our phones for over an hour.

The other two handsets are packed away in a drawer, not in use.

Any suggestions would be appreciated.

TIA.

[Devon_Dave]

What is the make and model of the phone? Do you have a dial tone on your line? 

[Fiigural]

Thank you for replying

The phone is a BT8600 Trio, with answerphone. The other two handsets aren't connected. The line is working fine, I have an ancient corded set plugged into it, that's working ok too. I did disconnect that when we watched the flash timings earlier, just in case that had anything to do with it.

Figural

[Les-Gibson]

My guess is that the handset, which has its own power source, is trying to tell you that it cannot find the base station

[Fiigural]

How long might it take for the batteries to run down? I'd need to check this when the batteries are flat. The phone manual says the batteries can be removed but they can't; the instructions are wrong, there's no way in.

Thank you for replying.

Figural

[imjolly]

this was a previous post and they managed to remove batteries

https://community.bt.com/t5/BT-Devices/BT8600-Cordless-Phone/td-p/2034449

[VeteranISPUser]

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@Fiiguralwrote:

The phone manual says the batteries can be removed but they can't; the instructions are wrong, there's no way in.

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Hi @Fiigural   There is a video here plus I am sure others if you search YouTube. https://youtu.be/WOl4SOBlFbI

[Les-Gibson]

@Fiigural 

If it's a fixed battery then it could be that the handset is trying to tell you that the battery needs charging, if so then charging it up a little should stop it flashing

[Fiigural]

Thank you for that! I've just managed to get the battery compartment open. The manual was misleading, saying that it only took finger power :-(. Powerful but very narrow fingers seem to be needed, neither of us have those.

A narrow-bladed table knife did the trick without doing any damage. So the batteries are out and we'll be phone-watching for a while. More later.

[Devon_Dave · Accepted solution]

Still not certain what you are trying to prove