No Subwoofer sound with pro logic on TXSR503

I have no experience of wireless speakers but I think you should contact the seller, if the unit is still under warranty or perhaps the support section of the manufacturer's website.
Certainly do read the instrucion manual.

I am guessing but either the wireless signal is being lost (depends on the function of the blue light) or the subwoofer is malfunctioning after a few minutes and the built-in thermal or overload protection is switching it off. The thump sound could be it trying to switch on again and finding the fault is still present.

Just my thoughts...

luis::
you have to open 16 screws to open the ts 7 logic board.

Hi,
here it is some tech info ..it is a fair price for 2.hand unit...
as ebay has the similar prices..it seems to be a good deal...

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for Helping out the Community :)
Hope this helps!
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Product Features and Technical Details

• Dolby Digital, Dolby Pro Logic II, and DTS-decoding home theater receiver with 5 speakers and a powered subwoofer
• 35 watts per channel x 4 "tallboy" speakers, 140 watts for the center channel, and 150 watts for the subwoofer
• High-resolution DVD-Audio playback; JPEG, MP3, and WMA CD playback
• Magnetic shielding for distortion-free placement near a TV or computer monitor
• Includes digital FM/AM tuner and a universal remote control

Technical Details

• Brand Name: Panasonic
• Model: SC-HT900
• Output Wattage: 390
• Component Type: Home theater system
• Audio Output Mode: Surround Sound
• Surround Sound Effects: Super Surround Sound
• DVD Type: DVD changer
• Built In Decoder: Dolby Pro Logic II, Dolby Digital, DTS decoder
• Remote Control Description: Universal remote control
• Optical Digital Input: Yes
• Audio Input: None
• Tuner Technology: Digital
• Radio Bands Supported: AM/FM

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

encoded with DTS Digital Surround. DTS Digital Surround (DTS) is another discrete multichannel
digital audio format available on CD and DVD software

if its a 5.1 channels it means 2 front speakers,2 rear speakers or either the center speaker or the subwoofer.try to hook up either center speaker or subwoofer.

try pluging in a diff, speaker to the amp see if u get sound.try powering the sub with a home radio just to see if u get sound at all if ur getting sound from the sub then its the amp but u could of damaged it when the amp over heated

Nice Receiver!
>In your surround sound settings make sure the levels are set correctly and the distance from your listing point to the furtherest
speakers are set to accommodate the levels etc.
>How many speakers 5.1, 6.1, or 7.1 (1meaning subwoofer)
>Pro-Logic supports 5.1 but not sure about 6 or 7
>Pro-Logic II does support all
>Make sure you are hear the sound from all sometimes the sound is really faint if you are in surround mode

Thank You and good luck

Hello Smegboy,

Yes, you are right. This receiver is rated at 100WRMS output in all 5 channels (2-front, 1-center and 2-surround) while in Dolby Pro Logic operation. The subwoofer output is line level only (not amplified), which means you need a powered subwoofer to be connected to this output. A non-powered subwoofer could be used but, you need an additional amplifier connected to the subwwofer output from the receiver to drive it.
Let me know if this helps.

cancerags

try to change subs with your friend to find out if the problem is on amplifier or on sub wofer

Ive seen this problem in alot of audio setups in vehicles but most peeps dont know this is not a good thing and will cause damage to your woofers or amp. 99% of the time it turns out to be as you said that bad boy muting circuit. alot of these curcuits do use separate transitors or diodes as mute switches but most of them are directly from the Microproccessor. Only way to trouble shoot this is with a schematic and a good car stereo tech. Good luck