@MarkYates As your problem had resolved itself just before your Sky engineer arrived it clearly completely defeated their ability to carry out a logical analysis and subsequent rectification of this intermittent fault.
So, in my opinion, in this particular case, there is no logical reason to blame these two Sky Q receivers instead of the LNB, dish and coaxial cables.
LNBs often suffer from intermittent periods of moisture penetration during prolonged periods of rainfall, then quickly drying out, and recovering during subsequent dry periods.
The Sky Q 1TB and 2TB MK3 receivers are identical apart from the size of their hard drives. My original MK1 Sky Q receiver was upgraded to a MK3 2TB receiver just over 6 years ago, and neither receiver has ever required the attendance of a Sky Q engineer.
The Sky Q 1TB MK3 receiver only became the default receiver some several years ago, during a prolonged period when it was difficult to source 2TB hard drives in order to manufacture further 2TB devices.
If your Sky engineer adopts the attitude of swapping out any Sky Q receiver, irrespective of whether or not they have actually established the real reason for a resident's problem, it would seem hardly a surprise to be told that they had already swapped out several that very morning.
Whilst it would be highly inconvenient if the problem does not resolve itself before the attendance of your next Sky engineer, it might well make it much easier for them to identify the actual cause of this fault.
Godfrey.
