Can it be Fixed ?? MoltenSolder

[adm]

quite a detailed read that, anyone here had a job done, my duo2 decided not to wake up today after opening it up to check on the hard drive, thinking of getting repair done especially if replacing the components will actualy improve the performance

Very unlikely to improve the performance with respect to it being new. It's the same with the claim that the internal temperature dropped by 15C. Terminally failing components may make the power supply more noisy and this interference may degrade the signal to noise of an input signal. The writer of that article possibly didn't check that replacing one or two faulty capacitors would have achieved the same fix. He is lucky working on multi layer printed circuit boards (PCB) that more damage wasn't done to the PCB.

Yes capacitors rated at 105C working temperature are a better quality than those rated at 85C. Also capacitors from the traditional well known brands are possibly have a honest specification sheet. In general its usually in switched mode power supplies where lesser capacitors fail. Heat also shortens the life of an electrolytic capacitor so placing your box in a position where there is a free flow of cooling air is a lot better than stacking it above or below other equipment that is also generating heat.