Samsung Galaxy S5 no sound

[Califauna]

Hi, I'm new here.

I have a Samsung Galaxy 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.
3. Full reset.

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

The phone operating system is Lineage 9.

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

Thanks for any troubleshooting and repair help.

[Califauna]

Re: Samsung Galaxy S5 no sound

I've found that actually the ear speaker is working. 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.

[RJARRRPCGP]

Re: Samsung Galaxy S5 no sound

Is this the original version from 2014?

[diif]

Re: Samsung Galaxy S5 no sound

There's a channel on YouTube that's fixed the audio on more than on S5 by reflowing the audio ic.

[Califauna]

Re: Samsung Galaxy S5 no sound

Is this the original version from 2014?

Its the G900F model. The OS is LineageOS.

[RJARRRPCGP]

Re: Samsung Galaxy S5 no sound

Its the G900F model. The OS is LineageOS.

Mine is the G900R4. I wonder how different the specs are...

[Califauna]

Re: Samsung Galaxy S5 no sound

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

https://www.youtube.com/watch?v=rtgWFHdJqNY

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 donor 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: https://www.youtube.com/watch?v=zN_XHYNJ6v8