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Last Updated
03/31/2019
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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION. |
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TELEVISION MAINTENANCE & REPAIR xx ELECTRONIC EQUIPMENT MAINTENANCE & REPAIR xx TELEVISION Improving the performance of the Heath kit GR-295 series of vacuum tube color TV sets. How to improve the performance of electrolytic capacitors, especially in video equipment. Procedures involved in measuring the output of the horizontal output transistor when troubleshooting a TV receiver. TV pattern generator for $6. How to change a picture tube. Wireless sweep tester for television. What TV test patterns really mean. Beware of your own TV repair traps. Tips and cautions when servicing your own TV. Tips for determining if a power supply capacitor is causing TV trouble. The ABCs of color television servicing. Part 1. Review and procedures. The ABCs of color television servicing. Part 2. Color servicing fundamentals. The ABCs of color television servicing. Part 3. Adjusting color sets. The ABCs of color television servicing. Part 4. Dynamic convergence and chroma servicing. The ABCs of color television servicing. Part 5. Chroma circuits, operation and troubleshooting. The ABCs of color television servicing. Part 6. Aligning color sets. Horizontal defect detector for TV servicing. A field-strength meter tuned to 15,750 cps. How to change a color picture tube. How to stretch the life of a picture tube with a CRT rejuvenator. Facts about opening your own TV service shop. How to turn a junked TV into a signal generator. Six usable output signals are tuner, video, vertical plate, horizontal grid and horizontal plate. Get a better color picture by making simple adjustments which improve the black and white picture. The adjustments include gray-scale tracking, purity adjustments and static convergence. Servicing those solid-state TVs. A discussion of four new service problems not experienced with tube-type TVs. How to eliminate color TV beat, those herringbones, wiggly lines and swirling colors using only a screwdriver and diddlestick. How to use a color bar generator. Troubleshooting color TV with an oscilloscope. Using signal injection to pinpoint color TV troubles. Use commercial signal generators or tap signals for a junked TV set. TV service case history. Learn about TV service from this step-by-step description of the repair of a faulty receiver. A look at fault analysis, diagnosis, and repair. Troubleshooting shutdown circuits in television receivers. Troubleshooting horizontal start-up circuits in TV receivers. Troubleshooting the cause for blowing the fuseable link associated with the vertical output transformer in a Panasonic TV receiver. TV alignment techniques. Part 1. The test equipment. TV alignment techniques. Part 2. The procedures. TV chroma circuit alignment, the logical approach and proper techniques. Using the controls on a TV to get a quick preliminary diagnosis of TV troubles. Quasar color TV open vertical fuse causes no raster. The vertical-interval test signals transmitted by TV networks can help in evaluating TV receiver and provide quick alignment check or need for repair. Spray chemicals used in electronic servicing. How to check linear integrated circuits for proper operation. Tips on repairing your own radio, hi-fi and TV set. Circuit for a TV booster amplifier using tubes. Tips on using the sweep generator and oscilloscope to align FM, TV and other receivers. How to change your own TV tuner and save money. How to slash TV repair costs. Tips from Sylvia Porter will minimize your chances of being "ripped off". Tips on how to clean a TV tuner knob to get rid of static. How to check your TV's remote-control system. Both infrared and ultrasonic types are discussed. How to check and adjust your color TV using a camcorder or VCR as a pattern generator. Basic service and maintenance you can do yourself. How to identify and correct antenna or lead-in problems and how to tune up a color receiver. How to clean and lubricate a TV tuner. How to repair your own television set. The eleven problems that plague color TV sets and what to do about them. How to adjust the convergence of your color television receiver or computer monitor with this convergence test program program that runs on an Apple II computer. Fine-tune your color TV and/or video monitor. Simple BASIC program converts a Commodore-64 computer into a sophisticated color TV signal generator. How to get more life out of your TV picture tube. Build a TV picture tube tester and rejuvenator. Tips on cleaning the tuner contacts on a TV set. Use of a vectroscope to align color TV. Adjusting your TV set for best color. Low-cost convergence generator. Produces a clear pattern, dots, cross-hatch, or vertical and horizontal lines, using RTL logic. Picture-tube tester and rejuvenator. How to set up a home TV service shop. Hints on getting started and the equipment you will need. Problems caused by replacing foreign vacuum tubes with U.S. versions. Troubleshooting excessive plate current on vacuum tubes. Repair of the power supply unit in a 4" Sony TV set. Installing a replacement flyback transformer with mislabeled wires can cause a color set to perform only in black & white. How to diagnose the problem and make the correction. Technique to pickup and display the vertical interval test signal (VITS) which is transmitted at the bottom of a normal TV picture. You will then be able to examine the TV signal in either of two interlaced fields. Diagnosing a defective transistor in the brightness limiter control of a modular TV receiver. Build a dot/bar video signal generator. It is an essential instrument for the setup and convergence of a color TV receiver. Est. cost: $15. Ten common TV receiver problems and their solutions. How to build a degaussing coil for your color TV picture tube. Tip: Eliminating the high-pitch "whistle" that can come from the flyback transformer. Make a TV front end (tunner substitute) for your test bench by powering a tuner section from an old TV with this 12-volt power supply circuit. Fix your own TV. Certain odors or smells denote specific TV troubles. A guide to their meaning. TV picture is a hint to TV trouble. Simple and safe adjustments that a color TV owner can make. Tip: Use a spray cleaner to clean mechanical tuner if you are having static problems and "jiggling" the tuner knob causes it to disappear. Maintenance tips for home electronics (Hi-fi, television, video, etc.) Ten sure ways to improve your TV picture. Secrets of a perfect color TV picture. Step-by-step TV troubleshooting guide. Color bypass amplifiers. Tips on troubleshooting screen controls. Troubleshooting the high-voltage hold-down circuits in solid-state TV's. A review of the programmable unijunction transistor (PUT) and some of the TV receiver circuits which use it. Step-by-step TV troubleshooting guide. Isolating faults in the horizontal and vertical sync circuits. Troubleshooting focus circuitry. How tuned horizontal output circuits work and how to troubleshoot them. Vertical OTL (output transformerless) output stages adapted from audio technology. How they work and how to troubleshoot them. Troubleshooting horizontal sweep circuits in solid-state television sets. How to troubleshoot horizontal output transistors. A systematic approach to TV troubleshooting involves the use of pencil, paper, and meter readings. How and why picture tube brighteners can save you dollars. How to troubleshoot faulty high-voltage shutdown circuits in solid-state sets. Pulse-width modulated DC power supplies for TV's and how to troubleshoot them. What you need to know about special signal generators. Part 2. TV signal generators and how to use them in troubleshooting TV sets. Tips on troubleshooting the low-voltage regulators in solid-state TV sets. Troubleshooting cutoff problems in color TV chassis. Tips on locating replacement parts for orphan TV sets. Trouble with the color and how to localize the problem. Tips on troubleshooting color TV sets. Troubleshooting starter circuits in pulse-modulated power supplies used in TV's. Another pulse-width-modulated DC power supply of the type used in TV sets is investigated. This one is the Quasar supply used in their TS938 and other chassis. TV tuners that use solid-state bandswitches are easy to repair if you know how. Fast-recovery diodes and DC power supplies can cause many troubleshooting headaches in TV repair. How the automatic brightness limiter circuit works and how to troubleshoot it. Tip: Bad solder joints may be a cause of intermittent problems. If the symptom is a horizontal bar, suspect the filter capacitors. Vertical and convergence oriented problems can often be traced to a single capacitor. Test jigs can be a big help in troubleshooting a TV chassis. The boost voltage in tube-type TV can provide a valuable servicing clue. Many TV symptoms can be the result of problems in the blanking circuits. Tip: A "christmas tree" pattern on your TV set is indication of a bad filter capacitor. Troubleshooting an automatic brightness limiter circuit in a Magnavox T995-01 chassis. Troubleshooting automatic brightness limiters in a Sylvania TV set. How to locate faults in all-electronic TV tuners. Brightness problems and where to start checking first. Conventional power supply circuits that look very odd. Use your oscilloscope for easier and faster TV troubleshooting. Step-by-step guide to aligning a TV IF amplifier. Tricks for catching the touchy intermittent problems, often traced to loose or damaged solder joints. Troubleshooting the TV tripler circuits (voltage multipliers). Excessive brightness and the circuit faults that can cause it. Investigation of an unusual DC power supply regulator in the Hitachi television chassis NP4SX-H2. Tip: How to determine which capacitors in a TV are special types which may NOT be replaced with ordinary bypass capacitors. How to recognize faults in TV oscillator circuits. Phase-controlled regulators. How they work and how to service them. How to locate leaky transistors in TV circuits. More information about shutdown circuits and related problems. How to use a sweep generator to troubleshoot a TV. A closer look at high-voltage shutdown circuits. Do it yourself color alignment procedures are described step-by-step. Requires a sweep/marker generator and an oscilloscope. Troubleshooting tube-type horizontal-output stages. How to troubleshoot solid-state vertical-sweep circuits. How to align video-IF circuits. How to troubleshoot vertical retrace line problems. A look at the unusual electro-mechanical relay found in some RCA overvoltage protection circuits. Troubleshooting sync circuits. Troubleshooting color-burst reference oscillators. Derating components for a longer life. Troubleshooting TV capacitors. Troubleshooting the DC power supply. How to determine the polarity of the voltage at a certain point in a circuit. Troubleshooting thermal problems. How to trouble-shoot the newer TV sets using the same methods and tests as always. How to trouble-shoot for a short in the flyback circuit. Troubleshooting countdown circuits. Servicing horizontal sweep circuits in a modern TV set. Tips on opening your own TV repair shop. How to service full-wave solid-state bridge rectifiers in a modern TV set. A look at pulse-width-modulated color-TV power supplies and service tips. Build this video test generator. Part 1. Use it to service TV receivers, video amplifiers, monitors, VCR's and other video equipment. Est. cost: $295. An easy and accurate test for integrated flyback transformers (IFT). Build this video test generator. Part 2. TV tuner and IF amplifier troubleshooting. Troubleshooting the tough TV problems. Build this color-bar generator. A cartridge for the Atari 2600 lets you use that videogame computer as a color-bar generator. Est. cost: $25. Helpful flyback transformer tests. Servicing op-amp circuits in newer television sets. Tip on testing an optocoupler for proper operation. Resurrecting a dead TV (no sound, no video). Some tips. Troubleshooting sync problems. Troubleshooting the collapse of a raster into a white vertical line (instead of the more common horizontal line). Repairing old TV's. Some tips. Tips on troubleshooting IC's (integrated circuits) in modern TV sets. Troubleshooting the tough TV service problems. Troubleshooting solid-state TV voltage regulators. Troubleshooting hot resistors and shorted capacitors. Dead-set servicing. Troubleshooting the B+ power supply. Selecting a suitable replacement for an unknown transistor in a TV receiver. Troubleshooting totally "dead" TV receivers by first looking at DC voltages. Troubleshooting electrical leakage in a circuit. Tips on troubleshooting a set with bad alignment and intermittent problems. TV troubleshooter's notebook: Black vertical bars. Troubleshooting open or leaky bypass capacitors. Troubleshooting "ghosting" or secondary images on TV receivers. Tracking down intermittent problems when troubleshooting TV receivers. Some tips. TV service case histories. A few tricks of the trade that may help you with your next TV repair. (1) Automatic fine tuning problem. (2) Fixing an "orphan" TV. Procedures involved in troubleshooting the horizontal output transistor in a TV set. Tips on knowing which tubes to check when TV needs repairing. Twenty-one TV problems which show up on your screen. Easy-to-make mirror allows TV fixits to view the screen as they're behind the set making adjustments. Tips on simple TV adjustments you can do yourself. Photos of 21 images and the possible electronic problems which they represent. | |||||||||
Copyright © by Norman Lathrop Enterprises. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means (electronic, mechanical, print photocopying, recording or otherwise) without the prior expressed permission of Norman Lathrop Enterprises, except as permitted by law. |
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