Laptop adapter overheating will not power that?
Notebook adapter overheating may be power, this conversion circuit must have a protective circuit (overcurrent protection circuit, overvoltage protection circuit, short circuit protection circuit, etc.) to prevent accidents, the protection of the laptop will not burn.
Notebook power adapter works simply: that is, the use of unstable power supply switching power supply through the conversion circuit into a notebook computer needs constant voltage DC, to the laptop power supply and charging.
There over-current over-voltage protection, a small number of switching power supply overheating protection.
You ask is afraid of spontaneous combustion caused by fire, the adapter itself is the use of flame retardant materials, including internal components are flame retardant requirements, can be burned in the fire, from the open fire was automatically extinguished. But you put in the "heater" is too dangerous, do not rule out the explosion due to electrical problems Mars ignited the quilt (very likely), the consequences can not be expected
will not!
Adapter works, is a transformer! Not because of high temperature and power, unless the high temperature can be spontaneous combustion!
Is the interface is not good or power overheating protection (as said downstairs)
You put the power adapter in a more ventilated place, and then side of the machine while testing, if the temperature is high after the power, it is that there is!
Three hours long,
Although the power adapter does not have a general overheat protection circuit, but sometimes, because of poor heat dissipation: such as placed inside the quilt, the internal component temperature is too high performance changes lead to abnormal output, and then over-voltage protection circuit action and stop working.
But this generally requires a very high temperature will occur, this time to touch the shell is very hot, and winter if you are not really used to cover the quilt, or on the fire side is unlikely to appear.
So it is very likely that your adapter is broken.