KX-TGA242CB The screen is blank but when it's on

Does it need a new battery?

Some batteries may require up to 24hour charge cycle before functioning, when the handset is on the base do any lights illuminate?

If you have a working handset I would try charging that on the base unit - you may have a faulty power adapter or cradle, not the battery

I got my display to come on while on the base unit, by making charging contacts connect. When I did this, then battery indicated it was low, then though I had taken it out a working phone. Maybe the fact is one of charging units are not charging correctly if have several. I have a 3 system unit and it is the base that seems to have the problem.

Possible that the battery Voltage has gone BELOW the THRESHOLD level and so will take a long time to come up so that the display light ups. It is best to see if the battery is leaked, damaged or the connectors clogged. Test the voltage on the battery and replace if the voltage is low. Also keep the phone plugged on overnight so that the circuit warms up and clears all disturbances.

download manual
you phone must in the menu paggin the base unit if this are done the phone are connected and you can ring out or anser phone

It's not charging the battery, clean the contacts on the base, put it on another base to see if it says CHARGING.

Verify that you have power to the base.

Battery might be bad. Try it in another handset.

i cant get my phone to work. it says no link to base move closer to base,try again.

Start by swapping the batteries between units. If the formerly bad handset charges, it's a battery. If not, look for dirty contacts where the unit sets into the base or the batteries fit into the holder.

Carl

Go to http://sumanual.com good luck.