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On Tuesday, 10 May 2022 09:17:32 BST Peter Humphrey wrote: |
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> Indeed, and I've now replaced the speakers, the 3.5mm cable and the USB |
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> dongle - every sound component is new. When I tested it yesterday in the |
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> plasma control panel, I heard one "front left", very loud, and then nothing. |
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> I thought some BT stuff must still be lying around somewhere, so I've |
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> installed a new system from scratch, using a kernel .config from before I |
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> started with BT, and today I still hear no sound. |
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> |
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> This seems like witchcraft now. |
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|
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Before you start ritual exorcisms, have you checked you are using the correct |
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3.5mm jack and it is inserted properly? See below: |
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|
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Jacks have a TS, or TRS, TRRS, or TRRRS contacts arrangement, depending on the |
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connectivity they are meant to offer - mono, stereo, stereo+mic and whether |
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this is balanced or unbalanced. |
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|
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Once I plugged in earphones (earbuds) with a 3.5mm jack in a MoBo and ended up |
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with my ears getting uncomfortably warm in seconds. Whatever voltage that |
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MoBo was applying to the 3.5mm socket was far too high. The earphones were |
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fried while I was scratching my head trying to understand how could this have |
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happened. I made a mental note never to trust the thin clients provided by my |
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employer. |
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|
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Some times the construction of the spring loaded contacts in a plug is so |
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poor, a correctly inserted jack does not provide a good and reliable |
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electrical contact. I'm running a desktop presently where I have to be |
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careful how far in I push a 3.5mm stereo jack, to be able to obtain both |
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stereo channels audio from the speakers. Annoying as this is, I have to |
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fettle with the jack to find the exact position at which I am able to get |
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audio from both channels without distortion. |
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|
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Despite the above mishaps I generally opt for a cable rather than BT for |
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audio. YMMV. |