Why is teletext display incomplete with snowy picture on my Sony TV?
If the teletext display on your Sony TV is incomplete, showing a snowy picture or double images, check the antenna cable and connection on the TV, VCR, and at the wall. The antenna setup may also be inappropriate. If signal transmission is too low, try using a booster and use the fine tuning function.
General| Screen Size | 21 inches |
|---|---|
| Display Technology | CRT |
| Brand | Sony |
| Model | KV-BT21M80 |
| Aspect Ratio | 4:3 |
| Inputs | Composite, RF |
| Power Consumption | 90W |
Details error codes indicated by the standby light flashes.
Explains the meaning of standby indicator flash counts.
Describes how to view error history on screen.
Covers clearing and managing diagnostic results.
Step-by-step guide to remove the rear cover.
Instructions for safely removing the speaker unit.
Steps to remove the main chassis assembly.
Procedure for safely removing the picture tube.
Adjusts the convergence of electron beams for a clear picture.
Aligns red, green, and blue electron beams for precise color.
Optimizes picture sharpness by adjusting focus controls.
Calibrates color reproduction for accurate white balance.
Explains how to use the remote for service adjustments.
Details the general procedure for making adjustments via service mode.
Covers adjustments for PMAX, Contrast, Sub Hue, and Sub Color.
Instructions for H-Trapezoid adjustment and Normal Mode (50Hz).
Steps for adjusting drive signals for optimal picture output.
Corrects various picture distortions like centering and sizing.
High-level overview of the TV's internal functional blocks.
Identifies the physical location of main circuit boards.
Provides detailed circuit schematics for troubleshooting.
Detailed schematic for the C Board (Video Amp).
Schematic for the A Board Processor section.
Schematic for the A Board Audio section.
Schematic for the A Board Power Supply section.
Schematic for the A Board Deflection section.
Schematic for the A Board Tuner section.
Schematic for the A Board Jack section.
Lists expected voltages and waveforms for key test points.
Shows the layout of components on the printed circuit boards.
Illustrates and lists common semiconductor components used.
Illustrates the TV chassis and its main parts with reference numbers.
Lists part numbers and specifications for capacitors.
Lists part numbers and types for diodes.
Lists integrated circuits with their part numbers.
Lists transistors with part numbers and types.
Lists part numbers and specifications for resistors.
Lists part numbers for tuner components.
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