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AKG K77 – left side very quiet, what should I check?

SeBo232 9174 17
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How can I diagnose and fix a left channel that suddenly became very quiet in AKG K77 headphones?

The most likely fault is a damaged left driver/insert, although the cable and jack should be checked first. One reply suggested bending the cable near the plug and moving it to see if the sound cuts in and out, because headphone cables often break there [#12665763] Another suggested jumpering the selected wires to test the effect; if only one side plays after that, the insert itself is damaged [#12665729][#12665838] If the driver is damaged, the practical options are to look for a replacement part on the forum or contact service for the repair price [#12665868]
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  • #1 12665444
    SeBo232
    Level 10  
    Posts: 54
    Rate: 2
    Hello to you!

    Recently, for some unknown reasons, left handset stopped working in AKG K77, the problem is so strange that I can still hear the sounds on the left, but very quietly, I do not know what the problem is, certainly not a software defect, more headphones, you have any tips?
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  • #2 12665473
    pp74
    Level 29  
    Posts: 686
    Help: 186
    Rate: 283
    Do you have a meter?
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  • #3 12665495
    SeBo232
    Level 10  
    Posts: 54
    Rate: 2
    Unfortunately, no, even if I had it I would not undress these headphones which is undoubtedly a disadvantage; / .. I will add that I connected them to the M-Audio Fast Track USB interface and after this session somehow the left channel stopped working
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  • #4 12665508
    pp74
    Level 29  
    Posts: 686
    Help: 186
    Rate: 283
    All you have to do is check on another device. If they are damaged, it will not work without disassembly.
  • #5 12665664
    SeBo232
    Level 10  
    Posts: 54
    Rate: 2
    I just got inside and everything is connected as it should - I think the right earphone is still working and the left is still silence, the fault of the cable?
  • #6 12665729
    pp74
    Level 29  
    Posts: 686
    Help: 186
    Rate: 283
    Now replace either inserts or wires between the right and left channels.

    If you do not have soldering equipment, please use the channels to go a step further.

    Upload a photo if you do not know which cables to replace
  • #7 12665757
    SeBo232
    Level 10  
    Posts: 54
    Rate: 2
    AKG K77 – left side very quiet, what should I check?

    Here's the photo :)
    Conclude - what do you mean?
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    #8 12665763
    tomasz1987
    Level 16  
    Posts: 239
    Help: 11
    Rate: 8
    And politely, you bent the cable around the spigot? grab it there, slightly bend it and wrap it so bent in your fingers that when you start creaking, you're in the jack for exchange.

    All but all headphones have a tendency to break the cable.
  • #9 12665780
    SeBo232
    Level 10  
    Posts: 54
    Rate: 2
    To no avail, I wrapped myself in the whole cable, the earpiece did not speak for a second
  • #10 12665781
    pp74
    Level 29  
    Posts: 686
    Help: 186
    Rate: 283
    Jumper the selected wires and check the effect.


    AKG K77 – left side very quiet, what should I check?


    The picture is the one that does not play right?
  • #11 12665792
    SeBo232
    Level 10  
    Posts: 54
    Rate: 2
    she spoke, she started to play

    Yes, exactly the one that does not play, i.e. Left handset with a cord

    Ie, I heard the law as I clenched these wires
  • Helpful post
    #12 12665815
    pp74
    Level 29  
    Posts: 686
    Help: 186
    Rate: 283
    SeBo232 wrote:
    That's right, how I connected those wires


    She played the law. I asked if they both play after a melee.
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    #13 12665826
    tomasz1987
    Level 16  
    Posts: 239
    Help: 11
    Rate: 8
    heh jack to hush and new to put on the cable is broken, option 2nd I do so often

    new 2-channel cable for headphones in round insulation, is thicker than standard, but this cable break does not go :D
  • #14 12665828
    SeBo232
    Level 10  
    Posts: 54
    Rate: 2
    exactly, I checked the tower, on two flaps and the interface.


    In this case, no, only the law spoke, the left remained silent, I was wrong to write - excuse me
  • Helpful post
    #15 12665838
    pp74
    Level 29  
    Posts: 686
    Help: 186
    Rate: 283
    SeBo232 wrote:
    only the right was spoken, the left was still silent, I was wrong to write - excuse me


    If so, the insert is damaged.
  • #16 12665844
    SeBo232
    Level 10  
    Posts: 54
    Rate: 2
    pp74 wrote:
    SeBo232 wrote:
    only the law was spoken, left was still silent , I was wrong to write - excuse me


    If so, the insert is damaged.



    I guess it is not worth repairing?
  • Helpful post
    #17 12665868
    pp74
    Level 29  
    Posts: 686
    Help: 186
    Rate: 283
    Ask on the forum, maybe some colleagues have such. You can also call the service if it is about the price.
  • #18 12665896
    SeBo232
    Level 10  
    Posts: 54
    Rate: 2
    Well, more than worth it, I will probably buy new ones, thank you for your help, now I am sure that you listen to the garbage bin :)
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Topic summary

✨ The left handset of the AKG K77 headphones has stopped functioning properly, producing sound at a very low volume. Users suggest checking the headphones on different devices to rule out external issues. The author confirmed that the internal connections appear intact, leading to speculation about a possible cable fault. Suggestions include replacing the wires or using a jumper to test the connections. The discussion also highlights the common issue of headphone cables breaking and the potential need for repair or replacement of the headphones. Ultimately, the author considers purchasing new headphones after confirming the left channel's failure.
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