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Logitech Z906 to PC with optical: No sound + no light on "effect"!

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There is no sound from my speakers when connecting the Z906 with optical to my PC. It used to work until a couple of days ago before I had to re-organize the speakers (disconnecting cables etc.), but upon reconnecting the speakers, they do not work anymore...

Furthermore, when I go through the different inputs on the z906, I see the orange light on the input, power-button and volume meter, but no light on "decode" and "effect" when I have it set on the input that applies to the optical (in my case, input 3). But when I switch it to input 2, it shows light on the effect (3d, 2.1 etc.)

I have updated the audio drivers on my Windows 10 PC, i have tried to factory reset the Z906 and tried to change the optical cable, but still no sound. However, when I use my headphones (connected through Revelator io44), the sound is working fine, so there's nothing wrong with the PC sound, I guess...

Any ideas what can be wrong and how I can get sound working again on my Z906?
 

FreedomEclipse

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Have you gone into windows and set it as default audio device? -- Silly question but often overlooked.



Windows 10 has been known to switch default sound devices after an update.
 
Joined
Feb 15, 2009
Messages
642 (0.11/day)
Location
Norway, which means Amazon is not available...
System Name Winter v3.2024
Processor Intel i7 12700K (since november 2021)
Motherboard Gigabyte Z690 Gaming X (since november 2021)
Cooling Air Liquid Freezer II 360 with LGA1700 kit (since november 2021)
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Video Card(s) Gigabyte RTX 3060 Ti Gaming OC Pro LHR - Rev3.0 (since july 2022)
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Display(s) 1x 55" LG C1 4k OLED, 1x Gigabyte 32" M32Q and 2x AOC 27" CG1
Case Fractal Design Define R6 (since 2018 and still working like a charm!)
Power Supply Corsair RM850x black (since august 2022)
Mouse Razor Deathadder v2 (since december 2021)
Keyboard Varmilo VEA109 v2 MX Silent Red (since august 2022)
Software Windows 11 Pro
Have you gone into windows and set it as default audio device? -- Silly question but often overlooked.



Windows 10 has been known to switch default sound devices after an update.
I have, yes.

This is how it looks for me:
2372367.jpg


No idea what can be wrong here... :/
 
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(disconnecting cables etc.), but upon reconnecting the speakers, they do not work anymore...
Furthermore, when I go through the different inputs on the z906, I see the orange light on the input, power-button and volume meter, but no light on "decode" and "effect"

Possible cable fracture, the Z906 will only show effects if the input is stereo, else decode if the input is DTS/Dolby, else there is no input.
For example if I switch to input 4, from 3 (optical 1), then both effects and decode go away, nothing connected.

Check for looseness or try another cable.
 
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