Manuals / Philips / TV and Video / CRT Television

Philips 21PT8439 Troubleshooting, General TV issues, Picture issues, Sound issues, Contact us

Models: 21PT3429/94 21PT8439 21PT8439/94

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7 Troubleshooting

This section describes commonly encountered issues and accompanying solutions.

General TV issues

The TV does not switch on:

•• Disconnect the power cable from the power outlet. Wait for one minute then reconnect it.

•• Check that the power cable is securely connected.

The remote control is not working properly:

•• Check that the remote control batteries are correctly inserted according to the +/- orientation.

•• Replace the remote control batteries if

they are flat or weak.

•• Clean the remote control and TV sensor lens.

The standby light on the TV blinks red:

•• Disconnect the power cable from the power outlet. Wait until the TV cools down before reconnecting the power cable. If the blinking reoccurs, contact Philips Consumer Care.

When turning the TV on/off/to standby, you hear a creaking sound from the TV chassis:

•• No action is required. The creaking sound is normal expansion and contraction of the TV as it cools down and warms up. This does not impact performance.

Picture issues

The TV is on, but there is no picture:

•• Check that the antenna is properly connected to the TV.

•• Check that the correct device is selected as the TV source.

There is sound but no picture:

•• Check that the picture settings are correctly set.

There is poor TV reception from an antenna connection:

•• Check that the antenna is properly connected to the TV.

•• Loudspeakers, unearthed audio devices, neon lights, high buildings and other large

objects can influence reception quality. If

possible, try to improve the reception quality by changing the antenna direction or moving devices away from the TV.

•• If reception on only one channel is poor, fine

tune this channel.

There is poor picture quality from connected devices:

•• Check that the devices are connected properly.

•• Check that the picture settings are correctly set.

Sound issues

There is a picture but sound quality is poor:

•• Check that all cables are properly connected.

•• Check that the volume is not set to 0.

•• Check that the sound is not muted.

There is a picture but the sound quality is poor:

•• Check that the sound settings are correctly set.

There is a picture but sound comes from one speaker only:

•• Verify that sound balance is set to the centre.

Contact us

If you cannot resolve your problem, refer to the FAQs for this TV at www.philips.com/support. If the problem remains unresolved, contact Philips Consumer Care in your country.

Warning

•• Do not attempt to repair the TV yourself. This may cause severe injury, irreparable damage to your TV or void your warranty.

Note

•• Make a note of your TV model and serial number before you contact Philips. These numbers are printed on the back of the TV and on the packaging.

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Philips 21PT8439/94, 21PT3429/94 user manual Troubleshooting, General TV issues, Picture issues, Sound issues, Contact us
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21PT3429/94, 21PT8439, 21PT8439/94 specifications

The Philips 21PT8439/94 and 21PT8439, along with the 21PT3429/94, are notable entries in Philips' line of CRT televisions, showcasing the brand's commitment to quality and innovation during the era of cathode ray tube technology. Each of these models captures the essence of what made CRT televisions popular, combining functionality with user-friendly features.

The Philips 21PT8439/94 is distinguished by its 21-inch screen size, making it suitable for various room sizes while providing an impressive viewing experience. It sports a traditional 4:3 aspect ratio, which was the standard for television broadcasts during its time, offering a nostalgic viewing experience for classic shows and movies. A key feature of this model is its Crystal Clear system, which aims to enhance picture sharpness and contrast, providing viewers with vibrant colors and an engaging visual experience.

Another critical technology in the Philips 21PT8439 is the integration of Digital Crystal Clear processing, designed to optimize the images displayed on screen. This technology utilizes advanced algorithms to improve detail and clarity, enabling viewers to appreciate the finer nuances in their favorite shows. Furthermore, the model comes equipped with multiple picture settings, allowing users to customize their viewing experience based on their preferences and the content being watched.

The 21PT3429/94 similarly benefits from Philips’ signature technologies, including a robust sound system that enhances the auditory experience alongside the visual. With integrated stereo speakers, this model delivers dynamic sound output, ensuring that dialogues, musical scores, and sound effects are portrayed clearly. It also features various audio settings, enabling users to adjust sound characteristics according to their environment and taste.

Additional characteristics of these models include multiple connectivity options, with AV inputs allowing users to connect external devices like VCRs and game consoles, further expanding the television's functionality. The remote control provided with the models simplifies navigation, making it convenient to switch between channels or adjust settings.

In summary, the Philips 21PT8439/94, 21PT8439, and 21PT3429/94 exemplify the hallmark features of CRT televisions, combining sophisticated technologies such as Digital Crystal Clear, enhanced sound systems, and user-friendly interfaces, ensuring a delightful viewing experience for audiences of all ages.