ipod touch: speaker volume quiet with hiss - GSM-Forum

ercol · 04-17-2013, 10:26

Hi,

A little stumped on this one; 4th Gen Ipod Touch. Replaced the volume/power flex cable - this now works absolutely fine.

However in doing so had completely remove the logic board/battery.

Having put it all back together, playing music out of the external speaker is very quiet, with a lot of background hiss (like the sound when you turn up a stereo very loud without playing anything).

There is also occasional clipping/clicking on certain tracks with lots of high notes.

Playing through the headphones works absolutely fine and at the correct volume.

I've checked the connection to the speaker itself from the red and blue wires and everything appears to be intact and as far as i can tell theres no grounding issue.

If anyones got any idea's i would greatly appreciate it. I have located this image which shows the board:

ImageShack® - Online Photo and Video Hosting

but my electronics knowledge is limited so other than checking that the Speaker preamp Ic and coil are not loose (they dont appear to be) i'm a at a loss.

I suspect the headphones being OK means the Audio IC is intact and the issue is around the preamp ic for the external speaker. I have checked all the nearby components and everything appears to be connected to the board but if anyone can offer a better way of testing it would be appreciated.

Many thanks,

ercol · 04-17-2013, 15:45

quick update on this, rather than clicking i've noted its actually a high pitched beep that goes in time with the music. Have ordered a replacement speaker to test but am not convinced this is the issue.

If anyone can point me in the direction of a way to test the external speaker ic or any connected components it would be appreciated.

Thanks,

cal_guy · 04-18-2013, 01:31

Just reball or change audio amp IC.

ercol · 04-18-2013, 15:11

Thanks for the feedback but the headphone output is working perfectly with no issues so and checking it its pretty well covered by metal shielding and nowhere near where i've done any soldering so i dont think i could have broken anything loose or ruined any connections.

Have ordered a replacement speaker incase the part is defective. Will update if this works.

Sam

cal_guy · 04-21-2013, 03:28

This ic
http://forum.gsmhosting.com/vbb/f631...hange-1646767/

Phonezone1 · 02-01-2015, 01:33

Did you find a solution for that , I have the same issue

cal_guy · 02-02-2015, 01:54

Quote:

Originally Posted by Phonezone1

Did you find a solution for that , I have the same issue

http://forum.gsmhosting.com/vbb/f631...3/#post9366184

04-17-2013, 10:26	#1 (permalink)
ercol Junior Member Join Date: Jun 2012 Posts: 18 Member: 1777495 Status: Offline Thanks Meter: 3	ipod touch: speaker volume quiet with hiss Hi, A little stumped on this one; 4th Gen Ipod Touch. Replaced the volume/power flex cable - this now works absolutely fine. However in doing so had completely remove the logic board/battery. Having put it all back together, playing music out of the external speaker is very quiet, with a lot of background hiss (like the sound when you turn up a stereo very loud without playing anything). There is also occasional clipping/clicking on certain tracks with lots of high notes. Playing through the headphones works absolutely fine and at the correct volume. I've checked the connection to the speaker itself from the red and blue wires and everything appears to be intact and as far as i can tell theres no grounding issue. If anyones got any idea's i would greatly appreciate it. I have located this image which shows the board: ImageShack® - Online Photo and Video Hosting but my electronics knowledge is limited so other than checking that the Speaker preamp Ic and coil are not loose (they dont appear to be) i'm a at a loss. I suspect the headphones being OK means the Audio IC is intact and the issue is around the preamp ic for the external speaker. I have checked all the nearby components and everything appears to be connected to the board but if anyone can offer a better way of testing it would be appreciated. Many thanks,

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

04-17-2013, 15:45	#2 (permalink)
ercol Junior Member Join Date: Jun 2012 Posts: 18 Member: 1777495 Status: Offline Thanks Meter: 3	quick update on this, rather than clicking i've noted its actually a high pitched beep that goes in time with the music. Have ordered a replacement speaker to test but am not convinced this is the issue. If anyone can point me in the direction of a way to test the external speaker ic or any connected components it would be appreciated. Thanks,

04-18-2013, 01:31	#3 (permalink)
cal_guy No Life Poster Join Date: Oct 2010 Location: Toronto, Canada Posts: 948 Member: 1430995 Status: Offline Sonork: 100.1613203 Thanks Meter: 312	Just reball or change audio amp IC.

04-18-2013, 15:11	#4 (permalink)
ercol Junior Member Join Date: Jun 2012 Posts: 18 Member: 1777495 Status: Offline Thanks Meter: 3	Thanks for the feedback but the headphone output is working perfectly with no issues so and checking it its pretty well covered by metal shielding and nowhere near where i've done any soldering so i dont think i could have broken anything loose or ruined any connections. Have ordered a replacement speaker incase the part is defective. Will update if this works. Sam

04-21-2013, 03:28	#5 (permalink)
cal_guy No Life Poster Join Date: Oct 2010 Location: Toronto, Canada Posts: 948 Member: 1430995 Status: Offline Sonork: 100.1613203 Thanks Meter: 312	This ic http://forum.gsmhosting.com/vbb/f631...hange-1646767/

02-01-2015, 01:33	#6 (permalink)
Phonezone1 Junior Member Join Date: Mar 2014 Posts: 31 Member: 2142857 Status: Offline Thanks Meter: 3	Did you find a solution for that , I have the same issue