Battery or Dock Connector?

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iPhone 3G

Second generation of iPhone. Model A1241 / 8 or 16 GB capacity / black or white plastic back. Repair is more straightforward than the first iPhone. requires screwdrivers, prying, and suction tools.

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Antony @antony76486

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Posted: Jul 18, 2011

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Battery or Dock Connector?

My iphone is completely unresponsive, it doesn't respond to toggling the ring/vibrate switch, to being plugged into a charger, to setting the volume and is not detected when connected to a computer. Is there any way to determine whether the fault is a dead Battery or a damaged Dock Connector?

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do what oldturkey says...it's good advice. btw OT...that's an answer, not a comment. (yours, not mine) so you should copy and paste and then I can vote it up cos it's right.

Jul 18, 2011 by pollytintop

Thank you pollytintop, diligent as always ;-)

Jul 18, 2011 by oldturkey03

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oldturkey03 @oldturkey03

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Posted: Jul 18, 2011

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I'd start with the easiest and most economical. Change the battery and go from there. I would think that the battery is at the end of its life span....good luck

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I found that Dock Connectors are available at the same price or more cheaply than Batteries, e.g. here www.iphoneshopusa.com and it's less work to replace the Dock Connector.

My real concern however is that I don't understand what's going on. If the battery is completely dead shouldn't the display still display a screen prompting the user to charge the device (the screen with a red discharged battery and a plug and electricity symbol below it)?

Are there any test points that can be safely checked a DMM with the display partially removed and the charger connected?

Jul 19, 2011 by Antony

You might try the battery connectors and see if you have anything coming through with the dock connector plugged in. You can also measure from the dock connector and check it out for any voltage. The iPhone does interesting things when the battery becomes flaky. ...;-)

Jul 19, 2011 by oldturkey03

if your battery is dead you will have no display. Once it goes beyond a certain level your phone almost hibernates to protect the shutdown process. Once truly dead the battery will not charge via the dock, you will need to change it. tbh if you are taking the dock out then take the battery out...you have the board out, you're going to throw away the battery, you don't want a battery at the end of it's life (it's got to be 2-3 years old now) Oldturkey is right, it makes sense..

Jul 19, 2011 by pollytintop

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do what oldturkey says...it's good advice. btw OT...that's an answer, not a comment. (yours, not mine) so you should copy and paste and then I can vote it up cos it's right. — pollytintop
I found that Dock Connectors are available at the same price or more cheaply than Batteries, e.g. here www.iphoneshopusa.com and it's less work to replace the Dock Connector.

My real concern however is that I don't understand what's going on. If the battery is completely dead shouldn't the display still display a screen prompting the user to charge the device (the screen with a red discharged battery and a plug and electricity symbol below it)?

Are there any test points that can be safely checked a DMM with the display partially removed and the charger connected? — Antony
You might try the battery connectors and see if you have anything coming through with the dock connector plugged in. You can also measure from the dock connector and check it out for any voltage. The iPhone does interesting things when the battery becomes flaky. ...;-) — oldturkey03
if your battery is dead you will have no display. Once it goes beyond a certain level your phone almost hibernates to protect the shutdown process. Once truly dead the battery will not charge via the dock, you will need to change it. tbh if you are taking the dock out then take the battery out...you have the board out, you're going to throw away the battery, you don't want a battery at the end of it's life (it's got to be 2-3 years old now) Oldturkey is right, it makes sense.. — pollytintop

iPhone 3G

Battery or Dock Connector?

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