I bought 6 (2 set of 3) Deco X68 at the beginning of this year.  All 6 are plugged into datapoints not on wifi.  In Aug, 1 became faulty, and I exchanged it for a new one.  However, in less than 3 months, this 1 X68 just suddenly went red.  I checked the data point and it is working fine.  The other 5 Deco are still working perfectly.  I'd turned off/on the mains for this 1 X68 and it's still red.  How else can I trouble shoot, or have I been given another lemon?