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yesterday
I had this situation for 5 weeks. Hub 2 ok for 15 months. 2 replacement routers + 5 Openreach engineers and 1 TalkTalk visit made no difference.
It was the router power cord : lots of flash but no ONT sync.
No-one thought to replace the original power unit -- it was flashing after all!
Perhaps 15 months is normal life expectancy? If you get a replacement router use it's power cord!
It is always recommended to use all the new cabling with any replacement router. Glad you got there in the end, though.
