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Speakers or sound card problem or both? - Help appreciated

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Hi everyone, this thread is for a friend of mine. So he called me and told me that he was compiling his own mission and testing it in ArmA III like he does always when suddenly the sound was distorted and after sometime, would not come at all. He added that moving the 3.5 mm jack on the back brought back the sound but it was all distorted. I told him that the 3.5mm to RCA cable going to the woofer might have gone faulty and told him to test it in his phone. And he said there was distorted audio in the satellites but no/minimal sound from the woofer. So he got a RCA cable and tested it but the result is same and now, the PC won't give out any audio at all. It cannot be a driver problem all of a sudden. To check the PC, I told him to check with his headphone and there was no audio there too on both the front and back panel ports. I am on the conclusion that a malfunction in the speaker system caused high voltage to pass to the sound card and damaged it or vice versa. I haven't visited his place yet but will do tomorrow. What do you think of this? I have never heard of anything like this.

Here are the system specs:
AMD Phenom II X4 955 @ 3.7 GHz, stock voltage, IMC at 2.7 GHz
Asus M4A88T-M motherboard(VIA audio chip)
2*4 GB Corsair Value RAM
XFX Radeon 7790 1 GB DDR5
1 TB WD HDD
Zebronics Platinum 600W PSU.
 
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hmm sounds like its a little fried alright, but you say "It cannot be a driver problem all of a sudden" why not?
 

OneMoar

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I would try detaching the front panel audio header and see if that makes the rears work sometimes if the front panel has a short in it it causes the rears to cut out
there is no high-voltage on a audio line unless your AMP has a total meltdown and happens to short the input power back to the ground
also if the motherboard has jack-sensing/jack-reassignment capably I would try toggling that via whatever control panel the audio chip has
 
Joined
Oct 9, 2010
Messages
1,549 (0.31/day)
Location
Kolkata, India
System Name Coffee | Maximus
Processor Intel Core i7 9700K @ 5.2 GHz with AVX, 4.8 GHz cache clock | i7 9700KF @ 5.0 GHz/4.7 GHz cache
Motherboard ASUS Maximus X Formula | ASUS Maximus VIII Ranger (modded BIOS for Coffee Lake)+TPM2.0 module
Cooling Cooler Master ML240 Illusion | Cooler Master ML120L RGB
Memory 2*16 GB (32 GB) Kingston Fury Beast @3600 MHz CL17 | 4*8 GB (32 GB) HyperX Fury @3200 MHz CL14
Video Card(s) Zotac RTX 3070 8 GB Twin Edge | Galax RTX 2060 Super 8 GB
Storage Samsung PM981a 1TB NVMe+480GB SATA SSD+2 TB HDD | Crucial P5 1TB, Crucial P1 500GB+2.5TB HDDs
Display(s) LG OLED 55 G3, 4K 120 Hz, VRR, ALLM, GSync, FreeSync | Samsung 43AU9070 4K TV, VRR, ALLM
Case Corsair Crystal 460X RGB | Lianli Lancool 215
Audio Device(s) Creative Sound Blaster Z SE | Realtek ALC1150 (Supreme FX)
Power Supply ASUS ROG Strix 750G (80+ Gold) | Cooler Master MWE 650 V2 (80+ Bronze)
Mouse Cooler Master MM731 19000 DPI gaming mouse
Keyboard Cooler Master CK721 65% mechanical gaming keyboard (tactile)
Software Windows 11 Pro x64 |Windows 11 Pro x64
Benchmark Scores Cinebench R20 MT 4200,ST 547 CPU-Z MT 4871, ST 620 | R20 MT - 4158, ST - 534, CPU-Z MT 4798, ST 603
Thanks for all your replies. And @patrico - The reason I don't suspect the drivers is how can it happen all of a sudden when he has not done anything? Also adding that the speaker is also not working, confirmed with 2 RCA cables and two of his phones, a Sony Xperia U and Nokia Lumia 520.
 
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