Well..... This is a tough subject for those of us who understand the problems associated with the circuit boards in almost every consumer product out there.
When we purchased many of our products in the "dark ages" before the advent of led lights, buzzers, glitzy features, etc. there were little to no power or controller type motherboards in these devices.
With the advent of everything needing to be "shiny" or powered, it is almost for sure there will be at least a small motherboard that provides the power, controls the device or flashes the lights.
On these boards, in most cases there are small components called capacitors, resistors and thermal protectors. Capacitors have a gel like substance inside that eventually dries up and the capacitor weakens or fails. In many cases, just by looking at the capacitors on say a power supply for an led TV, one can see a bulging or leaking area on the component. Thermal protectors and resistors can just plainly fail.
That said, with a little bit of electronic knowledge, a soldering iron, the research to identify the capacitor, finding and ordering the capacitor (usually in lots of 10-100 and a little bit of patience, planned obsolescence (usually in the 5-8 year time frame) can be obverted.
That said, considering the actual low price of most electronic devices (say your average clock radio, printer, can opener) and even into your larger electronics (big screen TV, phones, computers and major appliances) consider the above time and cost at maybe a nominal $75/hour or on major appliances up to $200 per hour, you will never be able to afford to have a technician come in and "fix" the issue. Much more cost effective to replace the device.
And there you have it - Planned or Programmed obsolescence.
Here is example: On GE Profile washers manufactured around 2008 there is an electromagnetic clutch that is engaged basically with an electronic magnet that is protected by a $0.42 (yes 42 cent) thermal protector (one time fuse) that fails if you happen to leave the lid open during the cycle. The full clutch is what most technicians will charge at $175 plus the 2 hours at $125 to replace it in the main mechanism. Now there is a choice - at least $425 to fix it or find a new one for $700 to replace the 12 year old washer. What do you think most consumers choose. Even to replace the 42 cent part takes the 2 hours to replace plus another hour to solder in the part plus whatever time it took to diagnose, order and receive the part.
If you are going to attack planned obsolescence, you will have to begin by stopping the production of crappy capacitors (components), then build controller boards that don't rely on those failing devices (in the case of the washer, put in a resetting thermal protector) or just don't get electronic devices that will eventually fail.
AND EVENTUALLY OUR LANDFILLS AND OCEANS WILL BE FULL OF BURNED OUR ELECTRONICS (much more dangerous than global warming or climate change).
