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Sony TA-AV521 I have a Sony Dolby Pro Logic Surround Reciver (TA-AV521) on my table. A customer complained that it had a crackling in the speakers. The only noticeable thing I can see is that the circuit board is dirty with debris. Do you have any suggestion of where to start diagnosising? Thanks again for time. I greatly appreciate it.

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  • Terrence  Jones
    Terrence Jones Jan 12, 2009

    Small pine needles and a good amount of dust. Im trying to learn as I go, so im growing as a tech person. No, I do not have the service manual. I can't afford it this time. Are there general areas that I can check on the circuit board if there is crackling in the speakers? I appreciate it!

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In addition to blowing off a ll the dust and debris from where it doesn't belong, spray a liberal amount of (plastics safe) contact cleaner on all the points of contact inside for the switches and knobs (look for anything moving when fiddling the knobs and switches, there are often lubrication ports in the thingies. Then jimmy the switches and knobs through their full range of motion about 25-30 times. Then repeat with a (plastics safe) silicon based lubricant.

Posted on Jan 29, 2010

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Hello,What kind of debris you see on board? Let me know are you tech person? If yes, then you should have related service manual, so you can follow suggestions easily. Thank you.

Posted on Jan 10, 2009

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1 Answer

All the speaker outlets seem to work fine, except the fronts, all will work, but if i plug the fronts in, all the sound then tends to just fade away, and then i have nothing, no sound. i can't figure...


I would:
1- First make sure you are properly testing using a reliable source, such as a CD Player or itunes. 2- Make sure the Listening Preset is not on Dolby Pro Logic. Make sure it is on Stereo mode and see if the problem persists.
What usually happens is that when listening to 2ch (Left and Right) Audio such as Television or Music and Dolby Pro Logic is on as a preset, Dolby Pro Logic analyzes both Stereo tracks, tries to detect the voices (center channel), ambient sounds (surround and fronts) and processes the signals into a 5.1 or 6.1 System. You tend to get a fading effect when Dolby Pro Logic is selected and listening to an old VHS, DVD or even music.
To remove a preset, make sure you select the Stereo button at the bottom left of the remote to pan through the options.
Hope this helps

Jul 21, 2011 | Harman Kardon AVR 230 6.1 Channels...

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How do I get the C5 Subwoofer to activate?


Hello
If subwoofer is inactive now, the sound preference settings you set now is wrong.

Before using the remote control for the following
operation
* Set the remote control mode selector to AUDIO

** There are exceptions in the operation mentioned
above. In such a case, follow each instruction

Dolby Pro Logic II*1

# Dolby Pro Logic II has a newly developed multichannel playback

format to decode all 2 channel sources - stereo source and Dolby

Surround encoded source - into a 5.1 channel.

Dolby Pro Logic II has two modes - Movie mode and Music
mode

# Pro Logic II Movie (MOVIE)
Suitable for reproduction of Dolby Surround encoded sources

# Pro Logic II Music (MUSIC)
Suitable for reproduction of any 2 channel stereo music sources

# Dolby Digital*1

Used to reproduce multichannel soundtracks of the software
encoded with Dolby Digital

# DTS Digital Surround*2

Used to reproduce multichannel soundtracks of the software

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2 Answers

We hooked it up and have no sound


From the Console Settings screen in the System area of the Xbox Dashboard, you can configure the video output of your Xbox 360 console for a widescreen, high-definition TV, determine your audio options, and check your console's serial number and Xbox Dashboard version.
Go to correct section for ... Audio

Change your audio output settings for games from this screen. These audio settings do not affect DVD movie playback. For DVD audio settings, refer to an individual DVD movie's setup screen.

Settings consist of:

  • Analog Output Settings: choose Mono to merge the left and right audio signals so that you can hear all sound through a connection to a monaural TV or monitor; choose Dolby Pro Logic II to listen in normal stereo (no audio surround receiver required) or to listen to Dolby Pro Logic or Dolby Pro Logic II soundtracks from compatible games or other media.

    Dolby Pro Logic consists of four channels of audio: front left/center/right and a monaural surround channel that is mirrored in each of your rear left/right speakers. Dolby Pro Logic II uses digital signal processing to generate 5.0 audio (front left/center/right, rear left/right) from any stereo (left/right) programming, whether from movies, music, or games. Unlike movies and music, however, games are specially encoded with Dolby Pro Logic II decoding in mind.

    To listen in either Dolby Pro Logic or Dolby Pro Logic II surround sound, you must connect your cable's left/right (white/red) RCA connectors to a compatible surround receiver. For more information, see our connection page for the cable you're using:
  • Digital Output Settings: configure this setting only if you'll be using the Toslink optical digital-audio output from a compatible Xbox 360 AV cable (optical digital-audio cable sold separately):


    The default digital-audio setting is Dolby Digital 5.1. If this is your preference, you do not have to make a selection from this screen.

May 13, 2011 | Microsoft Xbox 360 Console

1 Answer

Whent I connet my android to my samsung HTC55 using the aux 2, just one speaker work, that is correct? is there a way to connect my android and all my speakers work


Your Android phone can only output in mono or stereo, but it does not have a surround sound decoder, so it cannot output natively to a 5.1 surround sound system. However, your HTC550 has a Surround Sound Mode called Dolby Pro Logic II, which will simulate 5.1 sound from any stereo input. Try activating Dolby Pro Logic II mode on your receiver to get surround sound on your Android phone.

Apr 28, 2011 | Samsung HTC550 Theater System

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The audio keeps going in and out and cuts off. Also I have other devices going into aux in but it doesn't show 5.1 surround it only shows the front L, Front R, and CT speakers in stereo. I want everything...


If you are playing a source that is Stereo such as FM Radio or a CD the sound will not use all 5.1 speakers unless you enable the correct Surround Mode. On the remote there is a button on the lower right of the remote that says SURROUND. You can toggle through the various surround modes with this button the mode you want is Dolby Pro Logic The Pro Logic mode uses the built-in circuit to steer the Left, Center, Right and Mono Surround channel audio signals and uses all five speakers to play both stereo and Dolby Pro Logic program source, such as TV and VCR. You can use this mode with any stereo program source (such as VCR/TV) to enjoy multi-channel sound experience.

Mar 02, 2011 | RCA RTD317W Theater System

1 Answer

I'm going to surround sound mode, and my rear speakers are not working. I do a tone test, and they def work, but I can't get them working right?


Since you seem to be having problems with 'simulated' surround, how does ACTUAL surround material behave?

Have you tried AFD with certifiable multichannel source material to verify the surround speakers receive programmed sound??

Do the Dolby Digital or Pro Logic indicators light?

What about the other modes?

Mar 20, 2010 | Sony STR-DE475 Receiver

1 Answer

Not getting true surround sound


The only way to get Dolby 5.1 audio out of the Xbox will be via fiber optic cable from the Xbox to a Dolby Digital amplifier - which will output a decoded 5.1 signal to a 6 channel amplifier and 5 speakers and one sub-woofer. I doubt the Logitech speaker system has a Dolby 5.1 decoder built in with the amplifier for under $100, but I can't say for sure. If the Logitech has a an optical (or TOSLink) input, connect it to the Xbox and follow the instructions below.

To configure your audio settings, follow these steps:
  1. Start the Xbox 360 console without a disc in the disc tray.
  2. In the System section of the Xbox Dashboard, select Console Settings.
  3. In the Console Settings area, select Audio.
  4. In the Audio Settings area, configure settings for analog output or digital output:
    • Analog output settings:
      • Dolby Pro Logic II: Select this setting for stereo systems or Dolby Pro Logic II-compatible systems.
      • Mono: Select this setting for systems that do not support stereo output. Note If you have connected to Xbox LIVE and downloaded any AutoUpdates, the Mono option will not be available.
    • Digital output settings:
      • Digital Stereo: Select this setting to use digital stereo output.
      • Dolby Digital 5.1: Select this setting to use Dolby Digital output.
      • Enable WMA Pro: Select this setting to enable WMA Pro pass-through if your receiver supports the WMA Pro format.
Note You must use one of the following cables to support digital output:
  • Xbox 360 Component HD AV Cable
  • VGA HD AV cable
  • S-video AV cable
  • Advanced SCART AV cable
  • Japanese HDAV D-connector AV cable
Additional info:

http://www.dummies.com/how-to/content/hooking-up-xbox-360-sound.html

Sep 28, 2009 | Audio Players & Recorders

1 Answer

Canoot get surround sound from back speakers


MAKE SURE YOU HAVE THE SPEAKERS WIRED INTO THE SURROUND NOT THE SURROUND BACK. IFF YOU HAVE SPEAKERS WIRED TO SURROUND MAKE SURE THE VOLUME FOR YOUR REARS IS TURNED UP.ALSO CHECK THAT YOU HAVE AMP SET FOR SURROUND SOUND,IE DOLBY DIGITAL OR PRO LOGIC TWO.

HOPE THIS HELPS.

Jun 01, 2008 | Audio Players & Recorders

1 Answer

What power rated speaker shoud I use with my str-d865


Sony STRD865 Home Receiver - Dolby Pro Logic - 1995 Related Models << STRD665 ($300) | STRD965 ($400) >> Here's the specs, see below but looks like 100Wx2 speakers at 8ohms. Features: A/V remote; Digital Signal Processing w/ 6 soundfields (Dolby Surround, Hall, Theater, Stadium, Game, Acoustic), Soundfield link; 30 presets; 4 audio/ 4 video inputs (1 tape monitor); sleep timer Specs: Stereo: 100w x2 into 8 ohms (20-20k Hz) at 0.3% THD; Pro Logic: 100w x3; Surround: 25w x2; subwoofer preout; FM sens. 11.2 dBf; 17" W x 5 3/4" H x 14 1/2" D Hope this helps!

Sep 14, 2007 | Sony STR-D865

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