I have tried fully charging the battery but still no luck.
Also when the mains adapter is plugged in and the battery is fully charged both LED's are green. As soon as I try to boot up the mains power LED starts flashing amber.
The fault is exactly as desrcibed by Toshiba Technical Service & Support. I should like to know what the modification was that must have been sent to all repair centres. Whether it works for me or not I still want to know.
Why did I undertake this repair ? Because it's there, like Everest.