Chosen Solution
I have tried multiple lcds and all have the same problem where the backlight will not turn on. the same lcds work perfect on a different logic board. this logic board has water damage but works fine except it will not make the backlight work. what part on the board needs replaced? anyone have a schematic?
since some iPhones have the same problem, i would say that a coil is fried.
i found a picture on a gsm forum and the number 2 should be responsible for your problem. some a replacing the fried part with parts from nokia bb5 series or SonyEricsson phones
Sorry to bump a year old thread but the topics contained are relevant to my needs. I also have an Ipod touch 1st gen having the same issue, I have replaced the battery, the lcd, and the transformer highlighted in this tutorial however I am still having the same issue. There are no signs of water damage, or any destroyed components. Are there any I/O management ICs or controller chips I should try replacing? Any additional assistance would be much appreciated.
http://img686.imageshack.us/img686/9351/… I found this coil to be the problem when I replaced the battery.
hi
