INDEX V2.62 (05/25/1998)

Contents:

Table of Contents
Chapter 15) About the Author & Copyright
Chapter 16) Introduction
16.1) Television at the crossroads
16.2) Television receiver fundamentals
16.3) TV repair
16.4) Repair or replace
Chapter 17) TV Receivers 101
17.1) Subsystems of a television set
17.2) Why projection TVs are not just normal TVs in big boxes
17.3) For more information on TV technology
17.4) On-line tech-tips databases
Chapter 18) CRT Basics
18.1) Color CRTs - shadow masks and aperture grills
18.2) Degaussing (demagnetizing) a CRT
Chapter 19) TV Placement And Preventive Maintenance
19.1) General TV placement considerations
19.2) Preventive maintenance
19.3) Warning about using a TV as a computer or video game display
Chapter 20) TV Troubleshooting
20.1) SAFETY
20.2) Safety guidelines
20.3) Troubleshooting tips
20.4) Test equipment
20.5) Incredibly Handy widgets
20.6) Safe discharging of capacitors in TVs and video monitors
20.7) Additional information on discharging CRTs
20.8) Safe troubleshooting techniques for line powered TVs
20.9) The series light bulb trick
20.10) Getting inside a TV
20.11) Specific considerations before poking around inside a TV
20.12) Specific considerations before poking around inside a TV or monitor
20.13) Dusting out the inside of a TV
20.14) Troubleshooting a TV with the mainboard disconnected
Chapter 21) TV Adjustment
21.1) User picture adjustment
21.2) Internal adjustments
21.3) Focus adjustment
21.4) Adjustment of the internal SCREEN and color controls
21.5) Optimal procedure for setting brightness/background and screen adjustments
21.6) Color balance adjustment
21.7) Horizontal position, size, and linearity adjustment
21.8) Vertical position, size, and linearity adjustment
21.9) Pincushion adjustments
21.10) Geometry adjustment
21.11) Why is the convergence on my set bad near the edges
21.12) CRT purity and convergence problems
21.13) CRT purity adjustment
21.14) CRT convergence adjustment
21.15) Tilted picture
21.16) B/W TV size, position, and geometry adjustments
Chapter 22) Low Voltage Power Supply Problems
22.1) Low voltage power supply fundamentals
22.2) Typical TV power supply front end
22.3) Totally dead set
22.4) Intermittently dead set - bad cordset
22.5) Power button on set is flakey
22.6) TV blows fuse
22.7) Fuse blows or TV blows up when sync is disrupted
22.8) Internal fuse blew during lightning storm (or elephant hit power pole)
22.9) Fuse replaced but TV clicks with power-on but no other action
22.10) Power-on tick-tick-tick or click-click-click but no other action
22.11) No picture or raster and no sound
22.12) Reduced width picture and/or hum bars in picture and/or hum in sound
22.13) Excessive B+ from fixed regulator like STR30123/STR30130/STR30135
22.14) TV power cycling on and off
22.15) Dead TV with periodic tweet-tweet, flub-flub, or low-low voltage
22.16) Shorted Components
22.17) Startup problems - nothing happens, click, or tick-tick-tick sound
22.18) TV turns off after warming up
22.19) TV doesn't power up immediately
22.20) Old TV requires warmup period
22.21) TV shuts down with bright picture or when brightness is turned up
22.22) Relays in the Power Circuitry of TVs
22.23) Flameproof Resistors
22.24) Width and height change with warmup
22.25) Problems with SCR based regulators
22.26) TV shuts down with dark picture or when changing channels
Chapter 23) Deflection Problems
23.1) Deflection fundamentals
23.2) About the vertical scan rate
23.3) Picture squeezed in then died
23.4) Horizontal deflection shutting down
23.5) Horizontal lock lost
23.6) Insufficient width (without hum bars)
23.7) Vertical lock lost
23.8) Vertical squashed
23.9) Part of picture cut off
23.10) Single Vertical Line
23.11) Single Horizontal Line
23.12) Keystone shaped picture
23.13) Loss of Horizontal Sync (also applies to vertical) after Warmup
23.14) Intermittent jumping or jittering of picture or other random behavior
23.15) Horizontal output transistors keep blowing (or excessively hot)
23.16) Horizontal output transistors blowing at random intervals
23.17) Vertical foldover
23.18) Comments on vertical problems
23.19) Excessive width/pincushioning problems
23.20) Deflection yoke testing
23.21) Deflection yoke repair
23.22) Testing of flyback (LOPT) transformers
Chapter 24) High Voltage Power Supply Problems
24.1) HV power supply fundamentals
24.2) What is a tripler?
24.3) High voltage shutdown due to X-ray protection circuits
24.4) Low or no high voltage
24.5) Excessive high voltage
24.6) Snaps, crackles, and other HV breakdown
24.7) Arcing, sparking, or corona from CRT HV anode (red wire/suction cup)
24.8) Arcing from flyback or vicinity
24.9) Dave's complete procedure for repair of an arcing flyback
24.10) Arcing at spark gaps and gas discharge tubes on CRT neck board or elsewhere
24.11) Arcing due to bad connections to or disconnected CRT return
24.12) Flashovers inside the CRT
24.13) Ozone smell and/or smoke from TV
24.14) X-ray and other EM emission from my monitor?
24.15) Should I be worried about X-ray exposure while servicing a TV or monitor?
24.16) Flyback shot by 4 year old with water pistol
24.17) Blooming or breathing problems
24.18) Erratic focus or screen (G2) voltage and/or controls on flyback
24.19) Focus/Screen divider bypass surgery
24.20) Decaying or erratic focus or screen (G2) voltages
24.21) Disconnecting focus wire from CRT driver board
24.22) Focus or screen voltage drifts after warmup only when CRT is connected
Chapter 25) Raster, Color, and Video Problems
25.1) No color - black and white picture
25.2) Saturated color but almost no brightness
25.3) Brightness control has no effect
25.4) One color is too weak or too strong
25.5) Psychodelic color
25.6) No picture/dark picture/erratic picture
25.7) TV and Monitor Manufacturing Quality and Cold Solder Joints
25.8) Why can't TV manufacturers learn to solder properly?
25.9) Intermittent or missing colors
25.10) Some commentary on monitor and TV whacking
25.11) Retrace lines in picture
25.12) White/gray retrace lines
25.13) Red, green, or blue retrace lines
25.14) Bad CRT causing retrace lines
25.15) Red, green, or blue full on - fog over picture
25.16) Shorts in a CRT
25.17) Providing isolation for a CRT H-K short
25.18) Rescuing a shorted CRT
25.19) Picture tube replacement
25.20) Dark picture
25.21) Brightening an old CRT
25.22) Picture tube brightener
25.23) More drastic measures to brighten CRT
25.24) Left portion of screen is dark or faded
25.25) Color balance changes across screen from left to right
25.26) Bleeding highlights
25.27) Trailing lines in one or more colors
25.28) Brightness changes from left-to-right across screen
25.29) Picture fades in and out
25.30) Occasional brightness flashes
25.31) Excessive brightness and/or washed out picture
25.32) Bad focus (fuzzy picture)
25.33) Focus drift with warmup
25.34) Bad focus and adjustment changes brightness
25.35) Charlie's comments on focus problems
25.36) Blank picture, good channel tuning and sound
25.37) Purple blob - or worse
25.38) Color rings - bullseye pattern
25.39) Magnet fix for purity problems - if duct tape works, use it!
25.40) Color TV only displays one color
25.41) Disappearing Red (or other color)
25.42) The wandering black blob on old Sony
25.43) Vertical brightness or color bars
Chapter 26) Tuner, AGC, and Sync Problems
26.1) No reception from antenna or cable
26.2) Picture is overloaded, washed out, or noisy
26.3) Jumping picture on white scenes
26.4) Interference when using VCR RF connection
26.5) RF Interference on TV
26.6) Problems with ground loops and video hum bars
26.7) Missing or noisy channel or block of channels
26.8) Loss of Channel after Warmup
26.9) Channel tuning drifts as set warms up
26.10) Noise in picture and sound due to bright scene
26.11) Internal interference - switchmode power supplies and digital circuitry
26.12) Those darn rabbit ears
26.13) Herringbone lines in picture
Chapter 27) Audio Problems
27.1) Picture fine, no audio
27.2) Weak or distorted audio
27.3) Buzzing TV
27.4) High pitched whine or squeal from TV with no other symptoms
27.5) Reducing/eliminating yoke noise
27.6) Whining when off?
Chapter 28) Miscellaneous Problems
28.1) General erratic behavior
28.2) Wiring transmitted interference
28.3) Jittering or flickering due to problems with AC power
28.4) TV blows fuses or trips breakers or worse when A/V connections are made
28.5) My TV has the shakes
28.6) TV displays black box with normal picture border
28.7) Advertising overload
28.8) Strange codes appearing on TV screen
28.9) Releasing 'demo' mode
28.10) TV was rained on
28.11) TV was dropped
28.12) Really cleaning a TV inside and out
28.13) Setup menus will not go away or hieroglyphics on screen
28.14) Setup adjustments lost - TV service codes
28.15) Service menu caution
28.16) Strange number in upper left corner in Magnavox service mode
28.17) TV doesn't work after being in storage
28.18) Older TVs with multiple intermittent problems
28.19) TV has burning smell
28.20) Static discharge noise and picture tube quality
28.21) Revival of dead or tired remote control units
28.22) Problems with the IR remote receiver
28.23) So you lost your original remote (or it fell in the toilet)
28.24) Loudspeakers and TVs
28.25) Should I replace all the electrolytic capacitors if I find a bad one?
28.26) Sweet little old ladies and TVs from attic
28.27) Phantom spot or blob on CRT after set is shut off
28.28) Disposing of dead TVs (CRTs and charged HV capacitors)
28.29) Shock and/or spark when connecting cable or other A/V components
28.30) What is the deal with Macrovision copy protection?
28.31) AGC and copy protection
28.32) On-screen clock runs slow or fast
28.33) Cold problems with cold TVs - or - an unhappy Christmas
Chapter 29) Some Model Specific Problems
29.1) Erratic problems with older GE TVs
29.2) Erratic problems on late model GE, RCA, or ProScan TV
29.3) Sylvania/Magnavox/Philips - no startup
29.4) Sony TVs/monitors and Hstat
29.5) More on Hstat
Chapter 30) Items of Interest
30.1) An informal history of X-ray protection
30.2) What is this goop around some electrolytic capacitors and other components?
30.3) What does the flyback (LOPT) transformer do?
30.4) Why do flyback (LOPT) transformers fail?
30.5) Brief comments on testing the HOT
30.6) CRT rejuvenation
30.7) Memory chips in TVs
30.8) How does Picture-In-Picture (PIP) work?
30.9) Tony's notes on setting convergence on delta gun CRTs
30.10) Saga and general setup for large CRT TVs
30.11) Liquid coupling fluid for projection TVs
30.12) Comments on color purity, set orientation, and doming
30.13) About instant-on TVs
30.14) About gadgets to use house wiring as TV antenna
30.15) Can I add an S-Video input to my TV or VCR?
30.16) How do I add A/V inputs or outputs to a TV which does not have them built in?
30.17) Adding variable volume headphones to a TV
30.18) Building a Frankenstein TV
30.19) Turning a TV (or monitor) into an oscilloscope?
30.20) Displaying a video signal as a picture on an oscilloscope
30.21) Use of surge suppressors and line filters
30.22) GFCI tripping with TV, monitor, or other high tech equipment
30.23) Multisystem TVs
30.24) Playing NTSC videotape on a PAL TV
30.25) Buying a TV in Europe
30.26) Could a TV be modified for 3D (stereo) display?
30.27) Displaying TV on a computer monitor
30.28) Displaying computer video on a TV
30.29) How can I couple 4 TV screens to make them act like only one?
30.30) What is Scan Velocity Modulation?
30.31) What is Kell factor with respect to interlaced displays?
30.32) Homemade V-chip (or at least viewing limiter)
30.33) What is Aquadag?
30.34) Combined computer monitor and TV
30.35) Interesting TV Switch Mode Power Supply
30.36) The horizontal output transistor substitution jig trick
30.37) Ken's comments on (TV) SMPS repair
30.38) IR detector circuit
30.39) UK Satellite TV information
Chapter 31) International Color Television Standards
31.1) Brief description of international color TV standards
31.2) Some questions and answers about TV standards
31.2.1) What are the most common TV standards in the world?
31.2.2) Who devised them, and when? and why? Are they as old as television?
31.2.3) What's the difference?
31.2.4) Why do you need different TVs?
31.2.5) Why do you need different VCRs? Why can't one VCR record the same "output"?
31.2.6) Why did different systems evolve? Is one cheaper? Is one better?
31.2.7) Are there other systems besides the ones I've mentioned? Why?
31.2.8) Are there going to be more or less systems in the future?
31.2.9) Is there any way to convert a PAL tape to NTSC or vice versa?
31.2.10) Do they teach this stuff in electrical engineering courses?
31.3) Politically Correct TV Standards
31.4) Variations on a 'standard' - the PAL system
31.5) What about PAL sets WITH a tint/hue control?
31.6) TV, shortwave, power worldwide
31.7) Color television standards worldwide
31.8) Cable channel allocation
31.9) Notes on cable and broadcast frequencies
31.10) How did the (vertical) frame rate get chosen
31.11) Why is the NTSC color subcarrier such a weird frequency?
31.12) What is the maximal allowed deviation of the horizontal frequency?
31.13) Informal comparison of TV standards
31.14) PAL-plus
Chapter 32) Service Information
32.1) Advanced TV troubleshooting
32.2) Service manuals for really old TVs
32.3) How to locate service info when all the little stickers have fallen off
32.4) Techical assistance help numbers
32.5) Web resources
32.6) Parts information
32.7) Suggested references
32.8) FCC ID Numbers of TVs
32.9) Interchangeability of components
32.10) Horizontal output transistor pinouts
32.11) How do you locate the HOT
32.12) Replacement power transistors while testing
32.13) Testing of replacement HOTs
32.14) Removing and replacing the deflection yoke
32.15) Swapping of deflection yokes
32.16) Swapping of CRTs
32.17) Decayed glue in electronic equipment
32.18) Repair parts sources