To Next PageTo Next PageWhy does my Samsung CT566BVX/STR have no raster and no sound?
If your Samsung TV Receiver shows no raster and has no sound, possible causes include issues with the voltage at the cathode of D812 (D811), which requires checking the +12.5 Line. Other potential solutions involve checking or replacing the AVR, F801, FS, the power switch, D801, and C801. Also, consider shorting the Degaussing Coil.
How to fix no vertical scan (horizontal line) on Samsung CT566BVX/STR TV Receiver?
If your Samsung TV Receiver displays only a horizontal line due to no vertical scan, this could be due to an abnormal D812 (D811) Vertical Output Circuit. Suggested actions include checking D812 (D811) Vertical Output Circuit, IC301 and IC201. Also, check or replace DY.
What to do if my Samsung TV Receiver has no raster but sound is okay?
If your Samsung TV Receiver has sound but no raster, it could be due to an abnormal FBT or I2C Data. You might need to check or replace the FBT, IC201, or the CRT drive circuit. Checking the H.V of CRT is also recommended.
General| Brand | Samsung |
|---|---|
| Model | CT566BVX/STR |
| Category | TV Receiver |
| Language | English |
Safety precautions to prevent hazards like electrical shock and X-rays.
Guidelines for safe and correct servicing procedures.
Techniques to reduce component damage caused by static electricity.
Technical specifications for various TV models, including system, channels, and power.
List of integrated circuits used, their location numbers, specifications, and descriptions.
Illustrations showing the pin configurations and base diagrams of various semiconductor components.
Pin diagram and function description for the SDIL56 one-chip TV processor.
Initial adjustments required before proceeding to service mode adjustments.
Procedure to enter and navigate the factory service mode for adjustments.
Details on accessing and performing various adjustments within the factory mode.
Using test patterns to confirm convergence and purity adjustments.
Option byte settings for V2 Tri-Norma models, detailing data and functions.
Procedure to reset user controls to initial values via factory mode.
General guidelines for TV installation and adjustment, including picture and color settings.
Explanation of the automatic degaussing function and manual degaussing procedure.
Procedure for checking high voltage levels and associated size specifications.
Steps to adjust the focus control for a clear picture.
Checking the B+ voltage in different power modes.
Procedure to verify the operation of the failsafe circuit.
Step-by-step guide for adjusting color purity using magnets and yoke.
Procedure for adjusting the center convergence of the picture using magnets.
Adjusting the Automatic Gain Control (AGC) for optimal signal reception.
Adjusting the Automatic Fine Tuning (AFT) or Voltage Controlled Oscillator (VCO).
Detailed steps for screen, brightness, contrast, and color adjustments.
Troubleshooting flowchart for cases with no picture and no sound.
Troubleshooting flowchart for no raster when sound is present.
Troubleshooting flowchart for vertical scan issues, resulting in a horizontal line.
Troubleshooting flowchart for issues where there is no audio output.
Troubleshooting flowchart for cases where the TV displays no color.
Exploded view and parts list for specific CT566 and CT567 models.
Exploded view and parts list for specific CT567 models.
Exploded view and parts list for specific CT766DW models.
List of power supply components that differ across various TV models and screen sizes.
Detailed part descriptions categorized by screen size and model.
List of parts for the CRT PCB, specifically referencing the TDA6101Q IC.
List of components related to the comb filter option.
List of components related to the audio output options.
List of components related to the video output options.
List of components for mono and stereo sound options.
List of components related to sound output options for different models.
List of jacks used in the TV, including their specifications.
Parts list highlighting differences for CT566BVX/STR compared to other models.
Parts list highlighting differences for CT566BVX/XAP compared to other models.
Parts list highlighting differences for CT567BWX/STR compared to other models.
Parts list highlighting differences for CT567BWX/XAP compared to other models.
Parts list highlighting differences for CT766DWX/STR compared to other models.
Complete parts list for the CT566BWX/STR model.
Overall block diagram illustrating the interconnection of major components in the KCT57A chassis.
Printed circuit board layout for the main board, showing component locations.
Printed circuit board layout for the CRT V/M board.
Printed circuit board layout for the AV interface board.
Printed circuit board layout for the AV side of the chassis.
Wiring diagram showing the connections between different assemblies for the KCT57A chassis.
Schematic diagram part 1 of 4 for the main board, showing power and some signal paths.
Schematic diagram part 2 of 4 for the main board, detailing IF and Chroma sections.
Schematic diagram part 3 of 4 for the main board, covering deflection and control circuits.
Schematic diagram part 4 of 4 for the main board, showing CRT drive and power output.
Schematic diagram part 1 of 4 for the CT766DW model.
Schematic diagram part 2 of 4 for the CT766DW model, detailing IF and Chroma.
Schematic diagram part 3 of 4 for the CT766DW model, covering deflection and control.
Schematic diagram part 4 of 4 for the CT766DW model, showing CRT drive and power.
