VGA is a cable method used to send video signals between computer equipment. When inspecting the VGA cable, you are going to find that it is made up of three rows of small pins. These pins transmit the video signal between the two devices and also cause most of the problems when the video information does not appear on the connected screen. Thankfully, it only takes a few moments to troubleshoot the VGA connector on the cable.
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Things you need
- Compressed air
- Needle nose pliers
Check the cable connections that are plugged into the monitor and the source device. If the cable is not completely attached and the screws along the side of the cable tightened, the video signal is not going to be received by the monitor.
Disconnect the VGA cable and spray compressed air into the connector. If there is dust or other debris built up in the connector, the video signal is not accurately produced and sent to the monitor.
Look for any bent metal pins in the connector. If the pins are bent, the video signal is not received by the monitor, or worse yet, the cable doesn't connect at all to the equipment. Straighten out the bent pin with a pair of needle nose pliers. Do not jerk the pin suddenly, as any sudden movement may break the pin off completely.
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