Dell laptops in electric shock shocker

Rory Reid | Jan 21, 2008

We've discovered a worrying new feature in some Dell laptops: If you touch them, you may get an electric shock. This discharge can vary in strength from a gentle tingle to a sudden jolt. Disturbingly, you could also be shocked when connecting printers, PDAs and other peripherals to the offending laptops.

We know this because several CNET staff were hit with an electrical charge while using Dell's new XPS M1530--and we're not the only ones. Dell's forums are littered with user complaints about the shocking experiences they've had with some systems.

The problem seems to occur only in Dell laptops that have a brushed aluminum finish. These include the XPS M1330 and XPS M1530. It's caused by the two-pronged connection between the mains lead and the power adapter, which isn't earthed properly because of its lack of a third pin.

The laptop therefore exhibits an electrical potential (voltage) between its exposed metal parts (the brushed aluminum wrist pad) and earth ground. Since there is no earth, the human body basically acts as a wire that can conduct electric current, hence the tingling, jolting sensation.

This can be exacerbated depending on the conditions of a person's skin--whether it's oily or dry--and the surrounding environment. Humidity levels, flooring types or desk material all play a role here.

Dell had not responded to a request for comment at time of publication--we'll update if it ever gets back to us. When our colleagues rang Dell to complain, they were told Dell is willing to replace all affected two-pin power supplies with a three-pin connection. As some Asian countries are already using the three-prong plug, we are awaiting confirmation from Dell Singapore if these units are experiencing the same issue. In any case, the company doesn't seem to publicly acknowledge that there's a serious problem. According to a Dell Knowledge Base article:

"The electric current on all Dell products have been measured and proven to be well within the safety limits per safety standards--IEC950, EN60950, UL1950, etc., even with an input voltage of 240 volts. The voltage (tingling sensation) does NOT present any risk of injury to the user. It is recommended to unplug the AC adapter from the parent device before attaching any cables or accessories, as this reduces the possibility of experiencing the tingling sensation."

While this may reassure some users, we're still slightly concerned. Back in 2004, the company recalled 4.4 million laptop power adapters because of a fear they could overheat, creating a risk of fire or electric shock. The problem affected some Latitude, Precision and Inspirons between 1998 and 2002.

Via CNET UK Crave

Filed under: Notebooks
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