Broken 3.5 mm jack MacBook Pro 13" early 2015?

Question

Headphones

A very similar story with the MacBook Pro 13 2015 (MF 840) After 3 years of homework - movies, Internet, toys are not heavy (as a stationary device is connected to an external monitor and through 3.5mm to active speakers 2: 1) after I brought out the poppy I realized from a dream that something was wrong with the speakers (old jbl creature) - the left channel does not work and sometimes makes noise in time with the bass of the right one (in short, it’s unpleasant to listen at all ... I tried it on 2 headphones - everything is the same! Only repair? Help!

Answer 1

To get started, try -
https://support.apple.com/en-us/HT201295
https://support.apple.com/en-us/HT204063
Perhaps some kind of error in the hardware. Then try to reinstall the system.
Well, for the future - go to bluetooth devices. I have a xiaomi speaker adapter, beatsx is a permanent headset, and a separate active speaker with its own adapter.

Answer 2

I'm sure the problem is hardware and not the fact that the problem is in the connector, replacing the connector is the least of the troubles. The connector usually dies mechanically - it becomes loose. Ie if you move / press the sound appears. Sound circuits could burn out. In poppies, they are very fancy. Separate amp for each speaker, amp for headphone output, microphone amplifier. There is also a mixer chip that switches input to output. The audio codec controls all of this.
The sound is fired through the connector often, just when using active speakers or other devices with external power.

Answer 3

Resets SMC and NV RAM did not help! Now I’m using the HK Go + Play Mini Bluetooth speaker. But there are no bluetooth headphones yet, and sometimes you want not to disturb others and the presence of 3.5 mm allowed you to use an Apple headset (The laptop definitely didn’t swim and worked mainly at home as a stationary computer. Could it really I didn’t reinstall the system, I’m afraid it won’t help - because on the first day I immediately grabbed the El Capitan bootable flash drive (although it costs Mojave). headphones ((Do you think it's worth reinstalling the system?