Post originale di: oldturkey03 ,
@e_ah start with new batteries and make sure you get the right ones. This series iPhone is very finicky about the battery. After that check the dock connector and make sure that it is clean, has not broken or bend contacts. Clean it out with a few drops of 90%+ isopropyl alcohol and a few puffs of compressed air. Then you need to do some measuring. When you plug it in measure the voltage on the battery connector. Should be no less than 3.6V you can also check a few of the "fuses" for continuity. [image|1235541] Number one thing to do, replace the batteries! This is really important since that will give you a known-good starting point should further troubleshooting be needed.