ipod touch volume - - GSM-Forum

seve91 · 06-21-2012, 10:22

Hi,
have an ipod touch 4....flex is soldered correctly and no shorts, but vol - button is like continuosly pushed. As soon as i power on the ipod and unlock it,the volume goes from MAX to 0. Then, i could increase with vol + button but vol - doesn't work anymore!

Hobson · 06-21-2012, 11:34

you'll need to check that the volume buttons themselves are functioning correctly. You need to remove the logic board and and rel;ease the metal backplate from the volume buttons and expose the dimple buttons and see if that fixes it. It soulds like the Down button is continously depressed.

Worst case scenario is to replace the volume, on/off flex.

seve91 · 06-21-2012, 11:55

the problem is in the pads of the flex, soldered to the mainboard. The last (relative to vol -) sometimes short with the 3rd (GND) and make the contact...resoldered everything but last only half hour then the problem happened again, don't know why

seve91 · 06-21-2012, 18:39

now i have also charging problem...it is amazing

seve91 · 06-21-2012, 23:13

reballed the USB charging IC nothing changed.
Now i have problem with HOME button...it keep pushing himself...solution?

seve91 · 06-21-2012, 23:27

home button fixed, but still no solution for charging.
When i plug the USB cable, it recognize it and showing battery almost discharged, but the icon is not IN CHARGING, the icon is in CHARGE COMPLETED (icon of AC power plug).
And also very often the display light up itself, like sometimes power button is pushed, but they are good, flex already changed

Solutions?

seve91 · 06-21-2012, 23:44

just thinking about that PMIC and charging coil are exactly opposite (on bottom) respect the pads of the FLEX.
Maybe, using too much heat (the previous flex i've soldered many many times before bin it, tried also using the heatgun) i've damaged the coil or the PMIC and now they need reball.
Is that possible?Please someone help me!

06-21-2012, 10:22	#1 (permalink)
seve91 Freak Poster Join Date: Mar 2012 Location: Italy Posts: 207 Member: 1741592 Status: Offline Thanks: 42 Thanked 27 Times in 21 Posts	ipod touch volume - Hi, have an ipod touch 4....flex is soldered correctly and no shorts, but vol - button is like continuosly pushed. As soon as i power on the ipod and unlock it,the volume goes from MAX to 0. Then, i could increase with vol + button but vol - doesn't work anymore!

06-21-2012, 23:27	#6 (permalink)
seve91 Freak Poster Join Date: Mar 2012 Location: Italy Posts: 207 Member: 1741592 Status: Offline Thanks: 42 Thanked 27 Times in 21 Posts	home button fixed, but still no solution for charging. When i plug the USB cable, it recognize it and showing battery almost discharged, but the icon is not IN CHARGING, the icon is in CHARGE COMPLETED (icon of AC power plug). And also very often the display light up itself, like sometimes power button is pushed, but they are good, flex already changed Solutions? Last edited by seve91; 06-21-2012 at 23:33.

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06-21-2012, 11:34	#2 (permalink)
Hobson Freak Poster Join Date: Feb 2011 Location: Galway, Ireland Posts: 240 Member: 1508411 Status: Offline Thanks: 31 Thanked 36 Times in 27 Posts	you'll need to check that the volume buttons themselves are functioning correctly. You need to remove the logic board and and rel;ease the metal backplate from the volume buttons and expose the dimple buttons and see if that fixes it. It soulds like the Down button is continously depressed. Worst case scenario is to replace the volume, on/off flex.

06-21-2012, 11:55	#3 (permalink)
seve91 Freak Poster Join Date: Mar 2012 Location: Italy Posts: 207 Member: 1741592 Status: Offline Thanks: 42 Thanked 27 Times in 21 Posts	the problem is in the pads of the flex, soldered to the mainboard. The last (relative to vol -) sometimes short with the 3rd (GND) and make the contact...resoldered everything but last only half hour then the problem happened again, don't know why

06-21-2012, 18:39	#4 (permalink)
seve91 Freak Poster Join Date: Mar 2012 Location: Italy Posts: 207 Member: 1741592 Status: Offline Thanks: 42 Thanked 27 Times in 21 Posts	now i have also charging problem...it is amazing

06-21-2012, 23:13	#5 (permalink)
seve91 Freak Poster Join Date: Mar 2012 Location: Italy Posts: 207 Member: 1741592 Status: Offline Thanks: 42 Thanked 27 Times in 21 Posts	reballed the USB charging IC nothing changed. Now i have problem with HOME button...it keep pushing himself...solution?

06-21-2012, 23:44	#7 (permalink)
seve91 Freak Poster Join Date: Mar 2012 Location: Italy Posts: 207 Member: 1741592 Status: Offline Thanks: 42 Thanked 27 Times in 21 Posts	just thinking about that PMIC and charging coil are exactly opposite (on bottom) respect the pads of the FLEX. Maybe, using too much heat (the previous flex i've soldered many many times before bin it, tried also using the heatgun) i've damaged the coil or the PMIC and now they need reball. Is that possible?Please someone help me!