This artist's illustration depicts the Canadian space robot Dextre, which recently regained power at the space station after a design flaw caused problems.

Astronauts got power flowing to the international space station’s new robot Friday night, overcoming a problem that had threatened to disrupt shuttle Endeavour’s construction mission.

Working from inside, the astronauts used the space station’s mechanical arm to grab onto the robot named Dextre and energize the sleeping giant, which had been lying dormant outside the orbiting complex for nearly two days. Electricity quickly began streaming to the machine’s various joints and electronics, to everyone’s relief.

“Good news from the flight control room,” announced Mission Control. “Dextre has power.”

A cable design flaw had prevented power from reaching Dextre once the robot was hoisted onto the space station Thursday. Engineers on the ground put in the wrong circuitry before Endeavour’s flight; that was enough to create a roadblock in power and data to Dextre.

The robot had its hands attached to its arms during a spacewalk that ended well before dawn Friday. With the night’s successful power bypass, NASA kept on track tonight’s spacewalk to hook the robot’s 11-foot arms to its torso.

Dextre could not be completely assembled or tested without power to heat its joints and electronics.

The problem cable is in Dextre’s transport bed, or pallet, which the astronauts are using as a staging area to put the robot together. Supplying power directly to Dextre, via the space station’s robot arm, circumvented the cable and transport bed.

The Canadian-built robot – which cost more than $200 million – is intended to be a helper for spacewalking astronauts. It ultimately could take over some spacewalking jobs, saving time for space station crews while reducing their risk.

Engineers initially suspected the problem might be with a timer and require a simple computer software patch, but ruled that out. They tried the patch anyway, and it did not work.

Mission Control knew within minutes that the temporary robot-arm solution had succeeded.

Once it’s completely assembled early next week, the robot will be removed from its transport bed. From that point on, it will be powered from its various attachment points directly on the space station.

Endeavour and its seven-man crew delivered Dextre – lying in pieces on its transport bed – to the space station. On Thursday, it was attached to the exterior of the orbiting outpost.