You don't have to be a technical genius to do some basic troubleshooting if your desktop computer or other home appliance stops working. Almost every electrical device comes with a printed circuit board these days, and they can work loose from the base causing your DVR, microwave, or gaming system to stop powering up. Before you head off to the service center, you can check the connections yourself and save some time and money.
Opening the Case
If you bought an extended service warranty or contract, do not do anything and take the unit to the service center. Otherwise, almost all electronics cases are sealed with four screws located on the side and bottom of the case. Unplug the unit from the wall and its power supply and let it sit for ten minutes. Locate and remove the screws, then you may have to slide off the top of the case, exposing the circuit boards.
Is the Circuit Board Seated Properly?
You may have one large board or a collection of small green and gold circuit boards. They are plugged into the chassis by a band of gold or copper colored contacts. If the board wiggles when you touch it, it may have just worked itself loose. Reseat the board by pressing it firmly but without too much force. Look for dark spots on the circuit paths, these are signs of corrosion and could be your problem.
Check Small Plug-ins and Connections
Motherboards (the main circuit board) may have a collection of smaller boards or units connected to it. Once again, make sure they are firmly connected by reseating them. Check any wire connections that run from the plugins to the motherboard as well. You may have to pinch the connectors to get them to disconnect and reconnect correctly.