It wasn't that the sonic booster was heavy. In fact, it was very light. But it was large, and so was the frequency enhancer she had to fit. Trying to assemble the unit in the console room could cause problems, Nyssa decided, especially if the Doctor were to return and needed to move the TARDIS quickly, so she opted for her room as a more suitable place to work. Only after she had disconnected the booster from the base of the time rotor's pedestal and dragged it along the corridor did she realise she would also have to run a power cable to the room. It took a little while before Nyssa was able to find a length of cable both long enough and of the correct rating to carry the heavy amperage the booster would require. Yet more valuable time was wasted as she fought to unwind its thick, python-like coils. Nyssa groaned inwardly. Her arms ached, her fingers were sore and covered in small cuts. With more energy than was necessary, she thrust the cable into the power outlet at the base of the console's pedestal, and tightened the coupling clamp.
What do You think about Doctor Who: The Visitation?