I really like these phones and have had several as they all develop faults of some sort. The present one has just stopped charging.
I can use its handset if charged on another base station.
Is this problem irreparable ( again?) or is there some way I can get it to start ?
As it charges on another station it sound like its charger has gone rather than the handset. If it has an external power supply you may be able to buy an equivalent at somewhere like Maplins. (Take the old one it with you.) Alternatively the workaround is to charge both hand sets in the working station to by taking turns to plug them in. (They will hold their charge for days.)
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cordless phones.