How to Repair Audio Visual Equipment Safely

Submitted By: Edward Kendricks

Do-it-yourself repair of audio-visual equipment can save you a considerable amount of money. However, there is a degree of risk involved in any kind of work on electrical components. Additionally, by performing or even attempting to perform internal repairs you will likely void any type of warranty on the device. If the equipment is still under warranty, it would be wise to contact the manufacturer before performing any repairs yourself.
Your audio-visual unit should display warnings alerting you to the dangers of electrical components. Heed these warnings. Make sure that you have a basic understanding of electricity and have taken appropriate steps to avoid a shock. Practice common-sense personal safety practices. These include: keeping a first aid kit and fire extinguisher nearby, wearing gloves and safety glasses or goggles, making sure your tools are appropriate for the job and in good working condition, and working in a well-lit area. Consider performing your repairs on a non-conductive rubber mat.
To undertake a repair, you'll need a few items on hand. Know which tools you will need and ensure that they are suitable for an electrical repair. Obtain a wiring diagram of the device you are repairing. It's also a good idea to have a handheld multimeter. A decent multimeter includes functions to measure voltage, current, and resistance. These are fairly inexpensive and easy to find in the electronics department of most department or hardware stores. A multimeter will not only allow you to test for faults and current interruptions, but will also give you a chance to check for current levels which could give you a shock.
Before removing or opening any piece of the malfunctioning unit, ensure that all sources of power feeding the device are disconnected. In other words, make sure the power is off and pull the plug from the outlet. If two components are plugged into one another, be sure they are both disconnected from the wall or power strip.
If you determine that checking the voltage is necessary, reconnect the power only for the test. Be sure that no conductive parts could come into contact with current-carrying components. Ensure to completely disconnect the power after conducting the test.
Once you have opened the unit, check for any frayed or damaged wires. These should be replaced before continuing with the repair. Do not remove any ground wires from the unit. Identify the malfunctioning component and determine if you can safely and effectively repair it. Do not alter the components or switches.
After you have performed the necessary repairs, take care to correctly and firmly secure all electrical connections. Consult the wiring diagram to ensure the wires are installed accurately. Be sure that all wires are fully inside any panels and not pinched or in the path of moving parts. Before reconnecting power to the unit, be sure you have reinstalled all components correctly according to the manufacturer's recommendations.
Audio-visual equipment is generally straightforward and most repairs will be moderately simple. By following standard safety procedures, you can conduct the repairs yourself and avoid a costly service bill.

Published At: Isnare.com