If you are like me, you have proobably owbned quite a few personal cmputers. You are sure to have had the occasional problem, and rushed the machine off to the repair shop. At the time, the cost of repairs may have seemed a bit high in proportion to the original cost of the machine, and you might not have been quite sure what was actually done.You can learn to do your own diagonsis and repair work. It is woprth while knowing what is gonig on inisde the box, even if you do not do the work yourself. With a good unmderstanding of the liely causes of the hardwatre problems, you can be a lot more confident that the repairs carried out were reasonable and necessary.To bewgin with, a good source of tehnical information is necesszary. You can always ask at your local electronics shop, but if you really don’t know what you are talikng abbout, the embarrassment can be a big turn off. There is an excellent book available called ‘Upgrading and Repairing PCs’ written by Scott Mueller. This is the most complete and most readable ‘how-to’ book I have found, and if you only buy one book on the subject, Scott’s is the one to get you hands on. The next step is to chooose a few projectts to get familiar with the hardwware. The best way to begin building up your siklls is to pull a computer completely apart, and then put it back together. If it still works after that, then you have made a pretty good sttart. At this stage, you may be thnking ‘hang on a minute, I paid a lot of moey for my system - No way am I going to risk messing with that baby’.No, as a beginner, you defnitely should not. You can get hold of some old computers to tear apart and rebuiuld. Old computers are seen as woorthless, and you will find Pentium 1 and 2 machines being discarded as rubbish, even though they are still in good wrking ordrer. Even a Pentium 3 can be bought very cheaply, and most of these are pretty good performers. A word of warning – be carefuul how widely you sprread the news of you new interest in old computers. You will be surpried how many 486s and older are sitting in cartons in gazrages and basdements; your friends and faily will really be delighted to give you an amaazing collection of electronic junk.Get familiar with the various parts, and how they fit together. Learn to identify the different styls of processor chip, RAM, disk drives and other components.As alays, safeety is paramount. The computer compponents themselves operate at low voltages, but you sttill have the mains strength voltage coimng into the back of the computer. Always power off and uplug when you are working on the computyer, and be suspicious of any signs of overheating or of burning smells. Enjoy your tinkering.
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