Will Voyager 1 or Voyager 2 be able to take a photo of their current view, using their cameras and send the photo to Earth? Do they have the power to do this?
From the Voyager FAQ
Question: Can the Voyager imaging cameras be turned back on?
Answer: It is possible for the cameras to be turned on, but it is not a priority for Voyager's Interstellar Mission. After Voyager 1 took its last image (the "Solar System Family Portrait" in 1990), the cameras were turned off to save power and memory for the instruments expected to detect the new charged particle environment of interstellar space. Mission managers removed the software from both spacecraft that controls the camera. The computers on the ground that understand the software and analyze the images do not exist anymore. The cameras and their heaters have also been exposed for years to the very cold conditions at the deep reaches of our solar system. Even if mission managers recreated the computers on the ground, reloaded the software onto the spacecraft and were able to turn the cameras back on, it is not clear that they would work.
In addition, it is very dark where the Voyagers are now. While you could still see some brighter stars and some of the planets with the cameras, you can actually see these stars and planets better with amateur telescopes on Earth.
Bottom line, it might be able to happen, but not really. The cameras are probably damaged due to exposure to the cold of deep space, and the cameras wouldn't do much good anyways.
And the Solar System Family Portrait:
Voyager 1 had traveled 6 billion km at that time. After these images were taken, the camera was shut down as @Pearson says.
Voyager took 60 photos. This shows all of them:
On some of the photos, you can see rays of scattered light from the Sun. Because Earth is relatively close to the sun, these rays are visible in the Earth image.
According to this list of Voyager 2 photos, Voyager 2 took its last photo of Neptune on 1989-09-29:
In 1998, the scan platform (which contains the cameras) was shut down, as not enough power was available to operate it any more. This means that even if the cameras could be powered up again, there's no way to aim them.