What is the boom sound when Sony WEGA KV-BZ21 is turned on?
- DDerek LewisSep 12, 2025
The small “boom” sound heard when your Sony TV is turned on is the TV’s demagnetizing function working. This is normal and does not indicate a malfunction.
What is the boom sound when Sony WEGA KV-BZ21 is turned on?
The small “boom” sound heard when your Sony TV is turned on is the TV’s demagnetizing function working. This is normal and does not indicate a malfunction.
Why does my Sony TV cabinet creak?
If your Sony TV cabinet creaks, it is likely due to changes in room temperature causing the cabinet to expand or contract. This is normal and does not indicate a malfunction.
Why does Sony WEGA KV-BZ21 TV screen go blank during channel change?
If your Sony TV screen sometimes goes blank for slightly longer than usual during channel changes, it means the “Signal Booster” is detecting a weak signal. This is normal and does not indicate a malfunction.
What to do if Teletext display is incomplete on Sony WEGA KV-BZ21 TV?
If the teletext display on your Sony TV is incomplete, check the antenna cable and its connections at the TV, VCR, and the wall. You can also set the “Signal Booster” to “Auto” from “Manual Program” in the “Channel Setup” menu, try using an external booster, or use the fine tuning (“Fine”) function.
What to do if Sony TV has good picture but noisy sound?
If your Sony TV has a good picture but noisy sound, select the appropriate “TV System” from “Manual Program” in the “Channel Setup” menu.
Why does my Sony WEGA KV-BZ21 TV have no picture and no sound?
If your Sony TV has no picture and no sound, check the power cord, antenna, and VCR connections. Also, ensure the TV is turned on by pressing the power button. If it's still not working, try turning the TV off for five seconds using the main power button, then turn it back on.
How to fix snowy picture and noisy sound on Sony TV?
To fix a snowy picture and noisy sound on your Sony TV, check the antenna cable and its connections at the TV, VCR, and wall. You may also need to check the antenna setup or try an external booster. Additionally, you can preset the channel again using the “Manual Program” option in the “Channel Setup” menu, or set the “Signal Booster” to “Auto” from “Manual Program”.
How to fix abnormal color patches on Sony WEGA KV-BZ21 TV?
If your Sony TV displays abnormal color patches, keep external speakers or other equipment away from the TV. Avoid moving the TV while it is turned on. Turn off the TV using the main power switch for about 15 minutes, then turn it back on to demagnetize it.
How to get rid of dotted lines or stripes on Sony TV?
If your Sony TV displays dotted lines or stripes, avoid using a hair dryer or other electrical equipment near the TV. Also, check the antenna setup.
Why is there no color on my Sony TV?
If your Sony TV has no color, go to the “Picture” menu, select “Custom” from “Picture Mode”, and adjust the “Color” level in “Picture Adjustment”. For video input, access the “Setup” menu and verify the “Color System” setting, usually set to “Auto”. Also, check the antenna setup or contact a Sony dealer for advice.
Access the 'Initial Setup' menu for initial TV configuration.
Choose the preferred language for the TV's on-screen menus.
Automatically scan and preset available TV channels.
Organize, label, skip, or block TV channels.
Detailed functions for each button on the remote control.
Step-by-step guide on navigating and operating the WEGA GATE menu.
Adjust Picture Mode, Color Temperature, and Intelligent Picture settings.
Adjust Sound Mode, Balance, Intelligent Volume, and Surround settings.
Configure Auto Program, Manual Program, and Program Sorting/Edit.
Change Language, Picture Rotation, Color System, and Factory Settings.
Choose between Vivid, Standard, or Custom picture modes.
Fine-tune contrast, brightness, color, hue, and sharpness in Custom mode.
Select sound modes and adjust speaker balance.
Solutions for snowy picture, distorted picture, no sound, and other issues.
How to use Factory Settings to resolve persistent TV problems.
| Screen Size | 21 inches |
|---|---|
| Display Technology | CRT |
| Aspect Ratio | 4:3 |
| Remote Control | Yes |
| TV Standard | PAL |
| Input Ports | RF, Composite |
| Dimensions (W x H x D) | 520 x 470 x 450 mm |












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