By Homer L. Davidson
During this up-to-date variation of his best-selling consultant, Homer Davidson, grasp of client electronics, presents wizardly hands-on suggestion on troubleshooting and repairing quite a lot of digital units -- with no the good thing about schematic diagrams. * Covers automobile stereos, cassette gamers, stereo audio circuits, radios, VCRs, TVs, speaker structures, CD-players, and extra * NEW assurance of DVD avid gamers and handheld remote control devices * greater than four hundred special drawings and images to demonstrate the best method to find, try, and service faulty elements content material Servicing equipment with no Schematic find out how to find, try out, and service Troubleshooting and Repairing Audio Amps, huge and Small Servicing vehicle Receivers Servicing Cassette avid gamers Troubleshooting CD gamers Troubleshooting the television Chassis Servicing energy offers Servicing Stereo Sound Circuits Troubleshooting AM/FM/MPX phases VCR and TV/VCR blend maintenance Repairing handheld remote control devices DVD participant maintenance
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During this up to date variation of his best-selling advisor, Homer Davidson, grasp of client electronics, presents wizardly hands-on recommendation on troubleshooting and repairing a variety of digital units -- with out the good thing about schematic diagrams. * Covers automobile stereos, cassette avid gamers, stereo audio circuits, radios, VCRs, TVs, speaker platforms, CD-players, and extra * NEW assurance of DVD avid gamers and handheld remote control devices * greater than four hundred exact drawings and pictures to demonstrate the best option to find, try out, and service faulty elements content material Servicing equipment and not using a Schematic find out how to find, try, and service Troubleshooting and Repairing Audio Amps, huge and Small Servicing car Receivers Servicing Cassette gamers Troubleshooting CD avid gamers Troubleshooting the television Chassis Servicing energy offers Servicing Stereo Sound Circuits Troubleshooting AM/FM/MPX levels VCR and TV/VCR mixture maintenance Repairing handheld remote control devices DVD participant maintenance
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Additional resources for Troubleshooting & Repairing Consumer Electronics Without a Schematic
Inspect critical traces or printed circuit (PC) wiring on the bottom side of the chassis for overheated terminals and badly soldered spots. Usually a large blob of solder can cover up a poorly soldered terminal from a resistor or capacitor. Overheated parts can be isolated by touch. Touching the chassis and parts can indicate the intermittent component. After isolating the potentially defective section, isolate the defective part with transistor, IC, resistance, scope, and continuity tests. Test the transistors in or out of the circuit with a transistor-diode test using a DMM or a beta transistor tester.
Make sure that cables and wires will not lie on hot components in the chassis. Inspect and replace a defective power cord. Always replace a fuse with one of the exact amperage. Do not drop metal screws and small metal parts down into the maze of wiring and components and then forget to remove them before buttoning up the chassis. Make good, clean soldered connections. Botched wiring runs and poorly soldered connections may give the fire department and state commission an excuse to blame the electronics technician.
2-4) Optical power meter Low-frequency audiofrequency (AF) oscillator Signal generator Frequency counter Test discs Several special tools, manufacturers’ jigs, wrist straps, etc. Variable isolation transformer REQUIRED TEST EQUIPMENT FOR VCR REPAIR 1. DMM 2. National Television System Committee (NTSC) pattern 3. Ac millivoltmeter (RMS) Who’s on first? 2-4 4. 5. 6. 7. 8. 9. 10. 11. 12. 35 The dual-trace scope is ideal when servicing CD players. Frequency counter Dc power supply Oscilloscope Isolation transformer Alignment table Blank tape Special manufacturers’ jigs Soldering station ESR meter (Fig.
Troubleshooting & Repairing Consumer Electronics Without a Schematic by Homer L. Davidson
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