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HP TVs - Resolving Audio Problems

Low or inconsistent volume levels
TV volume through the TV speakers is too low or the audio levels change when switching sources (such as when switching from NTSC to ATSC channels, or analog to digital audio).
Volume fluctuation can occur because of the way different audio signals are processed or because volume levels are changing at the source devices.
To help minimize low or inconsistent volume levels, first try to stabilize the volume output of the source devices; that is, use volume adjustments from your set-box or DVD player. Each type or brand of device is different, and some may not have any volume adjustment capability at all. Consult the manual or menu items for the type of device that you are using to see if there are any adjustments you can make that can raise or lower the volume from the source.
Second, you can fine-tune the audio properties of your HP TV to help raise the overall volume if it is still too low.
As an example, on HP PL5060N or PL4260N TVs, you would do the following to adjust the audio properties:
  1. With the TV on, press the Menu button on the remote control.
  2. Select Audio and then Settings from the menus.
  3. Select Voice, UserMusic, Standard, or User and raise or lower the audio range levels to the volume that is acceptable for the current configuration you are using.
    Figure : PL5060N or PL4260N sounds configuration menu screen
  4. Later, when listening to programming, you can switch to one of these adjusted modes that matches the configuration you are using. by pressing the Sound button on the remote control.
As a workaround, the audio signal from the set-top or DVD player could be connected to a home stereo amplifier with separate speakers. If this is done, you can obtain 5.1 support (instead of stereo) and you can compensate for the changes in volume by simply adjusting the volume on the home stereo system.
No audio when using an HDMI connection
  1. Check if the HDMI audio is enabled in the source device (set-top box or DVD).
  2. Check if the source device (set-top box or DVD) menu has an adjustment for PCM frequency. Set the PCM frequency to 96kHz or less, which are standard HDMI PCM frequencies. The TV does not recognize PCM frequencies higher than 96kHz, which are optional HDMI PCM frequencies.
  3. When using an HDMI connection with a DVI-to-HDMI converter, you need a separate audio cable. Check if the RCA-to-S-mini audio cable is connected at the source device (set-top box or DVD) and at the PC/DVI Audio In connector on the back of the TV.
  4. When using an optical audio cable connection (for digital sound) to an external sound system, check that the TV setting in the OSD Audio menu for the Digital Audio Output option is Dolby Digital for 5.1-channel surround sound or PCM for stereo sound. If your TV was purchased after 2007, digital optical out is not active when an HDMI connection is used.
  5. If you still cannot get audio to work with the set-top box that was provided by your TV signal provider, the provider may be able to provide a set-top box that uses a DVI connection. If so, you can use a DVI-to-HDMI adapter and cable to achieve a connection that works.
No audio when using a digital audio cable
If your TV has a digital optical audio output and you cannot hear audio, try the following items:
  • Make sure Digital Audio is enabled in the TV menu. Set to Dolby Digital if your Digital Audio receiver is capable. Otherwise, select PCM.
    Figure : Example of TV digital audio setting
  • Make sure that the digital receiving device is set up to play audio from a digital signal. Most devices need to be set to the digital audio channel before audio can be heard.
  • Make sure that the fiber optic tips on the cable are not broken, damaged or dirty. If so, clean or replace the cable
    Figure : Fiber tip
  • Make sure that the connector on the TV and the connector on the receiver are not damaged or dirty. Clean the connector or servicethe device if any problems are found.
  • Digital optical cable are more susceptible to breaking when they are bent sharply. Use a different optical cable that is known to work. If the new cable works, replace the broken cable.
No 5.1-channel audio when connected using HDMI
  1. Check the audio settings in the TV OSD menus:
    • When using the display's speakers for sound (not an external sound system), check the TV setting in the Audio menu for surround sound. For example, on HP PL5060N and PL4260N, check if the SRS WOW mode option is On. When set to Off, audio is stereo only.
    • When using an external sound system for digital sound, check if the TV setting in the Audio menu for the Digital Audio Output option is Dolby Digital (not PCM).
  2. When using an external sound system:
    • If your TV was purchased after 2007, digital optical out is not active when an HDMI connection is used. A different video or audio connection must be used.
    • Check if the optical audio cable (for digital audio) is connected at the external sound system and at the Digital Audio Out connector at the back of the TV.
        note:
      When the source is analog, such as from an analog TV channel, there is no output on the Digital Audio Out connector.
    • Check if the analog left and right cables (for analog audio) is connected at the sound system and at the left and right Audio Out connectors at the back of the TV.
No audio when connected using HDMI with a DVI-to-HDMI converter
Make sure that the audio cable is connected from the source device to the TV. For example, on the PL5060N and PL4260N, the RCA-to-S-mini audio cable should be connected at the source device (set-top box or DVD) and at the PC/DVI Audio In connector on the back of the TV.

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