Iphone hardware and software solutions in 24 hrs

[onath]

iphone 3g USB not detected..what solution sir?
*** bless!

[Wites OM Tesla]

Originally Posted by X10robin

Measured all components around the 2 FET's
The voltages are comming trough.
Also after the second FET.

Yesterday the phone started to power-up, only reboots all the time.
Aplle logo and reboot.
No reaction on any of the buttons.

Now there are some of the 3V power supplies missing.....

From left to right all voltages on the capacitors (located above the PMIC)

3V LCD missing
3.3V ACC missing
3V Video pressent
C213 has Vbat pressent
3V cam has 2.8V
3V optical missing
3V IO only 1.066V ??
HP detect bias missing


Can it be that the PMIC is partly broken?
Why did it work yesterday?

Check also all coils if they generate voltages.
Charge battery externally 4.2V is the limit.
Did it detect by PC,if yes try restore.

[Wites OM Tesla]

Originally Posted by onath

iphone 3g USB not detected..what solution sir?
*** bless!

Did you tried this sol? http://forum.gsmhosting.com/vbb/f631...ml#post7667210

[nubben]

Maybe this is a bit off topic but I have some questions about tools to use.

1. When buying a multimeter, what do I have to look for? What measure areas are needed?
2. Wites, you refered to a service dc power, can you please explain or link to what this is?
3. For test what components on the logic board that getting hot, is an Infrared thermometer good for this?
4. For doing jumpers, what wire do you use? And is it possible to just use tin when it's just between two points?

Thank you in advance!

[X10robin]

Originally Posted by Wites

Check also all coils if they generate voltages.
Charge battery externally 4.2V is the limit.
Did it detect by PC,if yes try restore.

I will check.
i have the impression the 4.2 Volts is not there, since the battery voltage is not increasing.
I have measured the voltages while no display present.

Unfortunately no detection by the PC.
As soon as that works i will restore the phone.

[hardikmobile]

I got this 3gs but its dead and would not power on .. i replace the charged battery but no result .... 1st problem was that its not snyc with pc or not charged ... no usb dock working .. i give for repaired and after that they remove 1 component and not its totally dead not turning on any solution for this


Any jumper solution for this

[Wites OM Tesla]

Originally Posted by hardikmobile

I got this 3gs but its dead and would not power on .. i replace the charged battery but no result .... 1st problem was that its not snyc with pc or not charged ... no usb dock working .. i give for repaired and after that they remove 1 component and not its totally dead not turning on any solution for this


Any jumper solution for this

Make this jumper then try to charge.

[Wites OM Tesla]

Originally Posted by X10robin

I will check.
i have the impression the 4.2 Volts is not there, since the battery voltage is not increasing.

I mean to charge battery externally & not to give more than 4.2V to battery.

[Wites OM Tesla]

Originally Posted by nubben

Maybe this is a bit off topic but I have some questions about tools to use.

1. When buying a multimeter, what do I have to look for? What measure areas are needed?
2. Wites, you refered to a service dc power, can you please explain or link to what this is?
3. For test what components on the logic board that getting hot, is an Infrared thermometer good for this?
4. For doing jumpers, what wire do you use? And is it possible to just use tin when it's just between two points?

Thank you in advance!

1.Multimeter with diodes,continuity,resistors,voltages testing.
2.Something like this Guangzhou XinYue Co.Ltd
3.Don't know about infrared thermometer try it,i check with my lips for
heating components.
4.To make jumpers use thin wire from some damaged speaker/earpiece.

[X10robin]

Originally Posted by Wites

I mean to charge battery externally & not to give more than 4.2V to battery.

OK
i know CC CV charging for lithium batteries.
With the max voltage set to 4.2Volts

[nubben]

Originally Posted by Wites

1.Multimeter with diodes,continuity,resistors,voltages testing.
2.Something like this Guangzhou XinYue Co.Ltd
3.Don't know about infrared thermometer try it,i check with my lips for
heating components.
4.To make jumpers use thin wire from some damaged speaker/earpiece.

Thanks a lot for your answer!

[memobiles]

i have iphone4 charging ok but when i connect it to pc it says usb malfunction when i saw inside usb connecter of phone there is some damge in right side of jack one or two rows are damgae and wire are missing please any body tell me how i repair it and what is it solution thanks in advance

[hardikmobile]

no phone does not turning on ..

even if i assume that the jumper is correct...

i used fully charged battery ... but no result .... still in dead condition


i attach the whole main board pic see if you can see something



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ImageShack® - Online Photo and Video Hosting

[Wites OM Tesla]

Originally Posted by hardikmobile

no phone does not turning on ..

even if i assume that the jumper is correct...

i used fully charged battery ... but no result .... still in dead condition

Check for continuity green fuse near of Vibra if open make jumper.

[X10robin]

Originally Posted by Wites

Check also all coils if they generate voltages.
Charge battery externally 4.2V is the limit.
Did it detect by PC,if yes try restore.

Update on this phone:

Unit is booting when the charger is connected.
but after that is restarts all the time.

It looks like the power button is not detected.
Although i can get into DFU mode ????

Trying to restore the unit goes trough a restart and then it hangs in restart loops again.


So power button is detected to put the phone into DFU mode.
But not detected to power-on the phone .