Samsung Galaxy S5 no sound

[Califauna]

Hi again,

I have an S5 which produces no sound through either the top or bottom loudspeaker. The top loudspeaker produces a constant, very faint high pitched squeal.

I have tried:
1. Using the housing of another S5, as this housing contains the top loudspeaker.
2. Replacing the bottom loudspeaker with a new one.

The symptoms do not change after the above changes. The phone works fine apart from this.

I have a soldering station, multimeter, hot air gun, handtools, etc.

Thanks for any troubleshooting and repair help.

[abdulbadii]

Have tried all the S/W ways instead ?
esp. device reset

[SilverSolder]

When you reboot the phone:  Does it make normal sounds during the boot phase?  (Many phones give a little melody while booting...  Hopefully yours does!)

[Califauna]

There is no boot jingle when turning on the phone. The faint squeal is there as soon as the device is turned on.   It has Lineage 9 installed.

Software fixes I have tried include a full reset.

[bob91343]

I finally gave up on my S5.  Its battery kept running down (even changing batteries didn't help).  Now I use it to play games and see the weather report.

I replaced it with the A42 5G (or is that A24 5G) and it's a lot better.

[Califauna]

I've found that actually the ear speaker is working (not main speaker though). Turning up the 'in call volume' in setting I can hear it over the squealing sound. No such luck with the ringer volume, or playing music/Youtube videos though, which produce no sound at all through the main speaker.

[bob91343]

Plug in external earphone and see what you get.  Oh, I mean hear what you get.

[abdulbadii]

There is easily Samsung Galaxy S5 schematic online https://www.simplecodehub.com/2016/05/schematic-diagrams-samsung-galaxy-s5-sm.html?m=0, just narrow down to audio output try to get V or I since there's hint earphone line one works

[Califauna]

Plug in external earphone and see what you get.  Oh, I mean hear what you get.

SOunds works OK through headphones output.

[Califauna]

I have found out that the MB is completely missing a 'Low frequency filter' component. It must have fallen off at some point.



Anyone know where I can get one of these?

EDIT:  According to the service manual this component is an 'inductor', and from what I gather is the same component as the one next to it. Seems to be possible to buy this component online if you search for the part number (2703-004597).
 
https://mega.nz/67a9bdf9-8fff-449f-95a6-f5937fdda781

I guess if you have two S5s you could transplant one to the other (to the detriment of your other S5 of course).

If it is a filter I'm not sure why it would be a low pass filter (inductors behave as low pass filters don't they) rather than a high pass filter, but at any rate this guy seems to have bridged the contacts and his speaker works:

[abdulbadii]

Just try to get correct Samsung Galaxy S5 schematic then mark it or point out the need and upload here to be discussed and solved together.

as said
There is easily Samsung Galaxy S5 schematic online