Q&A for How to Unscrew a Coaxial Cable From Audiovisual Equipment

No. As long as all the equipment is turned off and unplugged, there is no risk of electrical shock or any other injuries.

A VGA connector has two small screws that hold the connector in place. That is the small connector that has a blue center, and is usually labeled PC on the back of the A/V device.

Very gently, grasp the threaded male connection on the back of the A/V device with a small pair of pliers and hold it steady so you don't snap it. Then take wrench of the correct size or an adjustable crescent wrench and very gently but firmly remove the head of the coax connector. If you try to rip it lose, you risk cracking the epoxy where the connector is attached to the board.

Spray the connector with a touch of WD-40 wait an hour. Then use paper towel to wipe off the excessive oil. Try once again.

Check the outlets, as they might be loose. They might need to be tightened with a needle nose pliers. They all have a washer-like nut to be tightened up clockwise. The two cables you might need to check - the copper wire strand might be bent inwards to prevent you from screwing them back in. Turn slowly with your fingers first and close your eyes while doing it, as you will have a better feel to it.