According to what I can find, the XE1000 line was manufactured from about 1994 until about 2006.
If it was made in 2000 or later, it may be a victim of the capacitor plague.
Some background : From about 2000 until about 2008, various Taiwanese electronics parts manufacturers produced water-based aluminum electrolytic capacitors containing a flawed electrolyte formula. Specifically, the formula lacked the phosphate corrosion inhibitors needed to protect the aluminum anode. Without the inhibitors, instead of a stable layer of protective aluminum oxide on the anode, you instead get a buildup of aluminum hydroxide. The reaction producing that aluminum hydroxide buildup also produces hydrogen gas. Capacitors have vents to deal with that gas (as the hydroxide reaction happens even with the inhibitors, but at a much lower rate), but eventually, the rate of the reaction grows to a point where the vent is not able to vent the gas as quickly as it is being produced. The pressure then builds up to the point where the capacitor seals or casing bulges or even outright bursts. This obviously wrecks the capacitor. This failure tends to happen after about 2-3 years under most circumstances.
From about 2002 til 2010, vast numbers of computer components and other electronics suffered failures due to these capacitors. Dell initiated a recall and spent hundreds of millions of dollars replacing these capacitors which were used on the motherboards of many models of their computers and many other manufacturers implemented similar measures.
If this is the case, the failed capacitor has probably been replaced at least once before, and replaced with another such capacitor, which then failed again.
Alternatively, if it was one of the earlier units, the capacitor may simply have reached the end of its lifespan, as RedGrittyBrick suggests. Under typical conditions, a typical quality non-defective electrolytic capacitor has a lifespan of about 20 years.