![]() The full erase head, found on VHS machines, is a stationary head located just before the head drum in the tape path. In a VCR, there are eight different types of heads. They do this by reading or changing the polarity of the oxides found on the surface of the tape. The heads of a VCR are small electromagnets, and either erase the signal from a tape, read the signal that is already on the tape or record a signal to the tape. As you look at the drum, you will notice small objects called "heads." The tape travels across it diagonally in a method called a helical scan. You will find this large, precisely tilted cylinder at the center of the VCR. The largest part of the VCR’s tape path mechanism is the head drum. In a VCR, it’s important to understand the functions of a number of parts. ![]() Finally, we will discuss some troubleshooting techniques that could save you money on expensive repair bills, and explain why some tapes just don’t want to play on your machine.īefore you can fully understand a system, it is a good idea to know the parts. We’ll look at the differences between formats and the advantages and disadvantages each format has with tape transport and recording styles. We’ll also look at the various kinds of VCR head drums. To help you understand the gadgets, wheels, buttons and pegs under your VCR’s hood we will look at the tape transport system. For serious problems, take the time to talk to a reputable VCR technician. All you have to do is look under your VCR or camcorder’s hood, recognize what you are looking at and take care of the problem. This is either because the tape you are watching is bad, or the natural wear and tear from hours of use. These are symptoms of your VCR or camcorder being out of whack. Did you ever notice that sometimes the movies that you rent from your local video store don’t play very well on your VCR? Perhaps that ball game that you taped last week has a white fuzzy streak running across the middle of it, or your camcorder munches your tape as you record that once-in-a-lifetime event.
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