1.The cost of competent technicians is high because the physical repair is often quite difficult to execute .So even if he could find the problem and fix it the cost of repair maybe higher than buying a new product.
2. "Planned Obsolescence" cause many electronics product have a new models with new features replace the old product . Because new product is modern and convenience . when new product more attractive than old product therefore , consumer want to buy a new designs its call "Fashion