This is usually the cue for somebody to start muttering something about built-in obsolescence, but it's just the inevitable consequence of economic growth.
Growth is made possible by the use of automation to produce more output with the same amount of labour (contrary to the protestations of the Luddites). However, some functions are able to be automated, and others aren't. Production is easily automated because it consists of a series of repetitive predictable tasks in a controlled environment, repair however, is less repetitive and predictable so it can't easily be automated.
Since one person's growth in living standards is another person's increased labour cost, growth makes labour intensive work progressively more expensive relative to the automated tasks. Eventually you reach the point where manufacturing a new product is cheaper than repairing the old one.
The automation and cost reduction of electronic equipment has been achieved by integration on a massive scale. Electronic circuits that were once built from components soldered into a circuit board are now fabricated directly onto a slice of silicon using lithographic techniques. Even in the 18 years since I was designing radio there has been a revolution, the circuit boards that once contained hundreds of components are now little more than a mechanical structure to mount a handful integrated circuits on. Very cheap, very small, very high tech, and very unrepairable.
Six weeks does sound a bit extreme, though. When my telly kicked the bucket, Currys sent a man out to plug in a new circuit board a few times before giving up and replacing it, but there was no fault finding process or wielding of test equipment and soldering irons as there would have been in the past. In the days when someone came out to your living room and spent an hour swapping valves, a telly cost many week's wages, not just one week's.
The same argument applies elsewhere too. The private sector of the economy tends to be biased toward functions that can easily be automated (manufacturing TVs, cars, washing machines, etc.), whereas the public sector has many functions that are a whole lot less amenable to employing robots (policing, nursing, social services etc.). So contrary to some opinion, it's not a left wing conspiracy causing a progressive increase in the public sector, just economic growth.