@Solla-topee Excellent response: Precise and Concise + moving the PA4010 (where it has been for 6 months) to a different power socket worked!! Thank you, problem solved

Hi I have an old TL-PA4010 - probably 5 - 7 years old. It has worked perfectly all that time, but today the Powerline LED is unstable - it is on/off intermittently. I have tried re-booting all...