Marvin Woo
Licensed Electrician
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Co-authored Articles (26)
How to Change a Fuse in Christmas Lights (And Keep It from Going Out)
Plus, how to tell when a light fuse is blown and needs replacing Nothing’s more disappointing than plugging in your Christmas lights only to find that they don’t work. If your entire string of lights stops working, y...
How to Insert Batteries the Right Way
Installing batteries is a breeze with this thorough guide Your new TV is all plugged in and ready to go when you realize the remote doesn’t have batteries installed. Fitting your batteries into the remote can feel like...
How to
Solder Wires Together
Soldering involves melting a low-temperature metal alloy over a joint or wire splice to secure 2 pieces together without the risk of them coming undone. If you want to combine 2 wires, you can easily use solder to make a...
How to Sync a Roku Replacement Remote
Reconnect devices after replacing a Roku remoteThis wikiHow teaches you how to set up a replacement remote for your Roku player or TV. Since pairing a new remote requires getting to a certain place in the Roku's settings...
How to
Calculate Total Resistance in Circuits
There are two ways to hook together electrical components. Series circuits use components connected one after the other, while parallel circuits connect components along parallel branches. The way resistors are hooked up...
How to
Daisy Chain Lights
A daisy chain connects multiple light fixtures to the same circuit. It's useful for recessed lighting, illuminating rooms, and connecting lights to the same switch. To start, always turn off all the electricity and confi...
How to Fix Exposed Electrical Wire
A comprehensive guide on repairing minor cable damage When electrical cables get moved around and bent a lot, sometimes the outer jacket can get ripped and expose the electrical wires inside. This situation is especially...
How to
Connect LED Strip Lights
To connect your LED strip lights, you can either use a connector for easy attachment, or you can solder the wires to the strip, which carries more current and creates a more stable connection. Whichever method you choose...
How to Convert a Computer Power Supply to a Lab Power Supply
ATX power supply conversion made simple Do you need a power supply for your workbench? Perhaps you are learning electronics. A typical lab power supply can cost $100 or more, but a computer ATX power supply is only aroun...
How to
Change a Track Lighting Bulb
If one of the lights on your track lighting stops working, you typically just need to replace the bulb to get it working again. To change a track lighting bulb, you will first need to determine how to take it out of the ...
How to
Straighten a Wire
If you have an old, bent wire, you probably know how hard it is to straighten out all the kinks. Even most new wires are coiled so they’re bent before you get the chance to use them. Straightening wires prevents unsigh...
How to
Replace a Power Cord Plug
The plugs on appliances or extensions cords can wear out or get damaged over time. However, you don’t have to spend money to get an entirely new cord. For just a few dollars, you can get a replacement plug and attach i...
How to
Change the Fuse in a GE Microwave
Microwave repair requires extreme caution, even if you are only replacing one fuse. Microwaves use much higher voltage than other common appliances, and can cause serious injury or death if handled incorrectly. Only peop...
How to
Connect Speakers to an Amp
Wiring your speakers and amp can be a huge undertaking, especially if you don’t have a lot of electrical experience. While it’s always best to leave complex projects to the pros, there are few ways you can connect yo...
How to
Test Wattage
If you want to test the wattage of household appliances—perhaps to identify sources of “phantom power” that are raising your electric bill—use an extremely easy and effective plug-in wattage meter. You can also c...
How to
Replace Halogen Downlights with Led
A straightforward guide on how to swap out halogen lights for more energy-efficient LEDsIf you use downlights for customized lighting in your home or business, you know that it’s extremely important for the light to fa...
How to
Wire a Lamp
If your old lamp has gone haywire or you're building a new one from scratch, wiring it might seem a bit daunting. But with a little bit of DIY knowledge, you can purchase a new cord and plug and get everything up and run...
How to
Bend Wire
This wikiHow will teach you several methods on how to bend wire, all with different goals and outcomes.
How to
Use Heat Shrink Tubing
Heat shrink tubing, also known as a shrink sleeve, can be used to repair and insulate wires and cables. After you slide the tubing onto the cable you’re fixing, use a heat gun or other heat source to make it shrink and...
How to Wire, Power, and Tap LED Light Strips
Add a bit of colorful flair to any room LED lights are a great way to add functional lighting or a bit of flair to a space. They’re also super easy to wire. You can connect an LED strip to an adapter and then plug it i...
