Creative T7900 (7.1) - 'Center' not working. All others fine

[atuljain.er]

Creative T7900 (7.1) - 'Center' not working. All others fine

Hello

A very strange problem with my Creative T7900. The center channel is not producing any sound. All the other channels are working fine.

Here is all testing I did-

• I tested the audio source by swapping jacks and inputs are fine. There is sound being passed through from all the channels of PC.
• I tested the connected audio cables. All cables are good.
• I tested the Center speaker by swapping channel with it. The speaker works fine and not faulty.
• I tested the speaker jack(on subwoofer). The jack is fine because it plays audio when other channels are played through it.
• I tested Realtek and Win 7 utilitiy to check all channels. When I play just the 'center' channel, no sound is heard.

There is a strange 'hiss' from the center speaker when all others are playing audio. So I am sure it is connected but not playing any audio.

I am unable to find any solution. I tested that the sound is being passed from PC to Subwoofer, and that the Center is well connected to the jack. Just that the subwoofer is not passing the center audio signal.

Here is system config-
Win 7 64 bit
AMD processor
8 GB RAM
Gigabyte 970 DS3 motherboard
Onboard Realtek HD audio capable of 7.1

Please suggest.

Thanks!

 

[Lazlo]

There is an amp inside the sub that drives satellite speakers. Probably the amps center channel is gone. That would be my guess since you pretty much tested everything else.

 

[atuljain.er]

Okay thanks. So do you think that is repairable? Or if it is, is it too expensive? Thanks

 

[Lazlo]

As I said It's just a guess, but if it's indeed the inbuild amp that's broken, maybe if you know someone with knowledge and skills in that field. Sending it in to creative would probably be to expensive unless you still have warranty. As far as i know this is an older model. Maybe 5 years?
So you are Probably better of buying new speakers. If you're tight with money you could always disable the center speaker and mix the channel into the two front channels while you save up for a new set.

All this is of course only the case, if the broken amp theory is indeed right! So I would encourage you to keep trying to pinpoint the problem.

Edit:
You could always try to find a usedCreative T7900 subwoofer unit somewhere.

 

[atuljain.er]

Awesome. I have a direction now. Thank you for being so clear and precise. :burger: