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DIY Do It Yourself

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DIY Do It Yourself - electronics, repairs, building, devices, workshop, mechanical etc23 Servers

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16 Jan 2021
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19 Jan 2021
@higherkinded:matrix.orghigherkinded joined the room.12:29:41
@higherkinded:matrix.orghigherkinded

Hey there. I'm here with a question that is very likely to be stupid but it's easier than looking it up properly. So:

What are the things that may possibly go wrong with a 7-pin Jack 3.5 socket? Trying no fix a Bang&Olufsen H3's faulty Jack here. Resoldered it already to exclude the case of broken contact, though it still doesn't properly work, i.e. one ear isn't reliably getting the signal. Tested both ears on BT, both work OK this way, and I'm positive that it's about the Jack since wiggling the cable (tested with different ones) in it effects in a connection being made/broken.

Do I just need to bend off the contacts inside a socket to ensure that it goes through? Do I have to consider anything else there?

Sidenote: it's hard to get your hands on a 7-pin jack where I'm at, so I'd rather play around with this one before considering swapping it out.

12:44:20
@higherkinded:matrix.orghigherkinded* Hey there. I'm here with a question that is very likely to be stupid but it's easier than looking it up properly. So: What are the things that may possibly go wrong with a 7-pin Jack 3.5 socket? Trying no fix a Bang&Olufsen H3's faulty Jack here. Resoldered it already to exclude the case of broken contact, though it still doesn't properly work, i.e. one ear isn't reliably getting the signal. Tested both ears on BT, both work OK this way, and I'm positive that it's about the Jack since wiggling the cable (tested with different ones) in it effects in a connection being made/broken. Do I just need to bend off the contacts inside a socket to ensure that it goes through? Do I have to consider anything else there? Sidenote: it's hard to get your hands on a 7-pin jack where I'm at, so I'd rather play around with this one before considering swapping it out.12:44:59
@stb1900:matrix.orgsTb@matrix joined the room.15:08:16
@russell:matrix.rochestercastle.netrussell
In reply to @higherkinded:matrix.org

Hey there. I'm here with a question that is very likely to be stupid but it's easier than looking it up properly. So:

What are the things that may possibly go wrong with a 7-pin Jack 3.5 socket? Trying no fix a Bang&Olufsen H3's faulty Jack here. Resoldered it already to exclude the case of broken contact, though it still doesn't properly work, i.e. one ear isn't reliably getting the signal. Tested both ears on BT, both work OK this way, and I'm positive that it's about the Jack since wiggling the cable (tested with different ones) in it effects in a connection being made/broken.

Do I just need to bend off the contacts inside a socket to ensure that it goes through? Do I have to consider anything else there?

Sidenote: it's hard to get your hands on a 7-pin jack where I'm at, so I'd rather play around with this one before considering swapping it out.

Bending the contacts is the second thing I would do. The first is to use a different, high quality cable to plug into the jack. Over the years of working with audio equipment of varying qualities, I've found that cheap cables/jacks are ever so slightly out of spec in regards to their physical size, which can cause problems like you're describing
15:22:13
@higherkinded:matrix.orghigherkinded
In reply to @russell:matrix.rochestercastle.net
Bending the contacts is the second thing I would do. The first is to use a different, high quality cable to plug into the jack. Over the years of working with audio equipment of varying qualities, I've found that cheap cables/jacks are ever so slightly out of spec in regards to their physical size, which can cause problems like you're describing
Thanks. Thing is though, I've started experiencing this on an original one, and the behavior is the same when instead using the one I've got with my Marshall set. Seems like the described case was tested then. To me, looks a lot like the contacts have been deformed with use (pulled it a couple of times, must be the case), so imperatively I'll try bending them out slightly, see how it goes.
15:34:26
@russell:matrix.rochestercastle.netrussellSounds like the right move to me. Good luck!15:35:45
@higherkinded:matrix.orghigherkindedJust noticed the group pic, it's hilarious15:43:12
@russell:matrix.rochestercastle.netrussellThere's a group pic? I'm not seeing one16:13:26
@grave:privacytools.iograveone common thing i've noticed fixing headphone jacks is that problems often come not from a bad contact but from wires touching each other20:29:39
@grave:privacytools.iogravehad to resolder one like three times before i properly isolated them20:30:02
@higherkinded:matrix.orghigherkinded

Oh, an update: pins aren't the problem, and somehow, the whole Jack seems ok. Probably an issue of how signal travels further down the line. Found a kind-of smashed wire that may or may not lead to the other ear. Though it doesn't explain why it still works over bluetooth. Will try to map out the wiring a bit later, maybe Bluetooth and Jack are wired separately. I mean, would make sense since:

  1. Sounds from Jack and BT just mix by summation (I think), you can play simultaneously frow two different sources.
  2. Jack-sourced sound works offline, it doesn't rely on battery.
20:40:59
@higherkinded:matrix.orghigherkindedAnd there's a whole huge bunch of wires going to the second ear, some of those are related to the haptics and stuff, some must be about sound, and you definitely don't need a lot of wires just for haptics. With the amount of functionality related to control, it would fit in like ~5 wires maybe. Not a makeshift gear, must at least utilize some simple protocol to fit this into the least amount of wires possible.20:45:59
@higherkinded:matrix.orghigherkindedSo fixing this wire will probably solve the issue, though the wire itself is very thin, and I only have the ones that are like 7 times that in cross-section.20:48:21
@higherkinded:matrix.orghigherkindedMay work out if done carefully, I think?20:49:02
20 Jan 2021
@mydow:midov.plmydow
In reply to @higherkinded:matrix.org

Oh, an update: pins aren't the problem, and somehow, the whole Jack seems ok. Probably an issue of how signal travels further down the line. Found a kind-of smashed wire that may or may not lead to the other ear. Though it doesn't explain why it still works over bluetooth. Will try to map out the wiring a bit later, maybe Bluetooth and Jack are wired separately. I mean, would make sense since:

  1. Sounds from Jack and BT just mix by summation (I think), you can play simultaneously frow two different sources.
  2. Jack-sourced sound works offline, it doesn't rely on battery.
Try resoldering jack on the board. Check for cracks on pcb.
19:20:22
@higherkinded:matrix.orghigherkindedResoldered, board is fine. Don't have a defectoscope (or whatever it's called in English) on me but visually it's fine.20:01:50
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24 Jan 2021
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25 Jan 2021
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26 Jan 2021
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