• VieuxQueb@lemmy.ca
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    8 hours ago

    Tv started acting up today, found a bulged cap on the main board, it’s a trough hole, the only one I find to match is a surface mount. I used some resistor legs to poke through the TV board and soldered the surface mount cap to the poking legs. TV is back to life ! Yay !

  • sp3ctr4l@lemmy.dbzer0.com
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    7 hours ago

    … Wouldn’t there be enough electrical power in this that you might wanna cover that in electrical tape?

    I’ve not jerry rigged an amp before, but I did once build a ramshackle ‘home media pc’ for some roommates once, out of old spare pc parts i had lying around, using the box their xbox360 came in as a ‘case’.

    Got a paperclip with some rubberized covering, snipped a bit off the two ends, and then you had to short the right two pins on the … whatever the socket is that would normally go to the front io panel is, you had to do that to turn it on lol.

  • Romulon@sh.itjust.works
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    14 hours ago

    I have done something similar. We were going to play Wii one night but my friend brought the wrong adapter.

  • MrQuallzin@lemmy.world
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    13 hours ago

    I can’t believe this picture of the “adapter” I made 15 years ago is finally relevant. Think I was just missing a cable extender so made one myself

    • Janx@piefed.social
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      10 hours ago

      No offense, but the quotation marks are on the wrong part lol. Yes, I’m judging your younger self for that extremely blurry “picture”. EDIT: It’s a joke, people…

  • blazeknave@lemmy.world
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    11 hours ago

    I removed the 3.3v from my sata cables last night and threw an “I told you I can figure shit out on my own as a man” up at my dead electrician father. That’ll show him to not teach me to be proud of myself…

    Also, help me. Fractal Node (fits 10). Proxmox. TrueNas. 1 zfs2 VDEV using 5 of 8 SAS HBA

    Adding 2nd swath of 5. Using remaining 3 SAS HBA and they’re working, the 3.3v fix worked including one disk on a chain with the original swath that didn’t require the fix.

    The 2 remaining new disks have no SAS slots to use, so using SATA but proxmox won’t detect them to even setup the pass through.

    Tested cables, disks, slots, etc. Enabled spin up on all sata in bios. Nada. Feels like a software or bus issue but I’m not technical. Need an adult

    Supermicro X10sl7-f

    • swab148@lemmy.dbzer0.com
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      8 hours ago

      Probably wanna make a separate post for this. I’m sure someone knows, but they won’t be able to see it buried in the comments of a meme.

      • blazeknave@lemmy.world
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        8 hours ago

        I kinda want to not repost and test the venn diagram theory in my head about this post’s audience. But you’re obviously correct 100%

    • RamRabbit@lemmy.world
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      7 hours ago

      Hah, I have done this before. PC fans are nice for random projects since they are square, have mounting equipment, and use an extremely common DC voltage. Mine has a little molex snake in the middle though. ;p

      • ik5pvx@lemmy.world
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        12 hours ago

        That’s the joke. They would claim that … I don’t know… electrons are going to fall off that copper wire or something like that.

    • floquant@lemmy.dbzer0.com
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      13 hours ago

      I mean, if it makes good contact and is not moving it is not going to affect audio quality any more than an equivalent length of extra cable would’ve

      • ik5pvx@lemmy.world
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        12 hours ago

        Once someone tried to tell me that the wrong cable impedance to the speakers affected sound. Asked him what is the wavelength at audio frequencies, conversation died.

        • Nerdulous@lemmy.zip
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          11 hours ago

          If they were passive speakers being powered through the cables and an amplifier wouldn’t the additional impedance of the cable result in a (probably imperceptible) reduction on volume? I agree it wouldn’t effect the waveform, and thus, the quality of the sound though.

          • ik5pvx@lemmy.world
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            10 hours ago

            Resistance can reduce the volume. E.g. if your wires are too thin for the current you want to send over them. The guy was talking about impedance.

            • Quibblekrust@thelemmy.club
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              8 hours ago

              Impedence is the combination of resistance (ordinary resistance to current) and reactance which is resistance specific to alternating current which comes from the capacitors and coils in the equipment. Even a squiggly circuit trace can create reactance. So, impedence is resistance.

              Whatch this short for a clear explanation:

              https://youtube.com/shorts/tanon58nW1o

              From what I’ve read, and from talking to a guy who own a music studio near me, impedance mismatch is a real thing in audio equipment. At best, it’ll lower the sound level causing you to have to crank up the volume, which just puts more strain on your equipment. Worse, it can cause crackling from waveform peaking. At the very worst, it can damage equipment.

              Brushing it off just because the guy doesn’t know the wavelength of audio signals is a dick move. No wonder he stopped talking to you. I bet you, yourself, know a lot of things, a lot of true things, that you can’t explain to the utmost detail.

              “You say quarks are combined with the strong force to make protons, huh? Well, what’s the binding force between an up and down quark? Oh, you don’t know? Curious.”

              • ik5pvx@lemmy.world
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                6 hours ago

                Impedance mismatch between two pieces of equipment (amplifier and speaker, in this case) is a thing, and depending on how the amplifier is built can be a problem. But for the piece of wire connecting them to behave like a transmission line it needs to be a significant fraction of the wavelength of the signal, which at audio frequency is quite a lot, so unless you have your amplifier on the other side of town it is totally irrelevant. The guy was blabbing nonsense. We didn’t talk about quarks.

    • mushroommunk@lemmy.today
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      15 hours ago

      It’s hard to see behind the copper but I’m pretty sure that is “Tape in”, an input, while the headphones next to it would be an output

    • TexasDrunk@lemmy.world
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      13 hours ago

      Others have already pointed out this is the tape in and that’s the headphone jack. To the left is an effects send and return which is after the preamp but before the power amp (it’s an in and an out where you’d plug in certain effects pedals). Far to the left is the instrument input. Depending on the specific signal you could probably route it through the effects return which bypasses the distortion of the preamp. I’d have to see exactly what the fuck they thought they were trying to accomplish.

      The color of it makes me think of the old Peavey Rage 158 amps but they didn’t have an effects loop or tape in. So I’m not exactly sure which amp this is. The far right knob is the master volume and the one left of the effects loop is reverb. That’s not important but it’s interesting to me.

    • SanctimoniousApe@lemmings.world
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      11 hours ago

      Banana plugs are a thing, and might even have plugged into the hole on the RCA jacks (probably not as they’re usually too wide, but it’s technically possible… I think - never tried it myself). However, they’re single conductors, not dual like RCA plugs are.

      Pair of banana connectors colored red and black.

      ETA: And, yes - I’m aware of the recent Tom’s Hardware article you’re referencing.

  • kivihiili@lemmy.blahaj.zone
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    15 hours ago

    i find this a surprisingly elegant solution!!!

    it’s nice and simple to put in place, and if you have this class of audio equipment at your whim, you probably have something to scavenge the copper from

    copper does oxidize, but so long as it can trade broker enough electrons around, i’m definitely making use of this idea in the future, thank you for the post

  • Duamerthrax@lemmy.world
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    11 hours ago

    I once saw someone make a video cable by dissecting the strands of a power cable and insulating them with packing table.