Hi Guys,
This Mac come with dead issues (severe water damage), now it’s turning ON except Trackpad and Keyboard not working.
Already check and write down DM for JT400 and JT201 don’t find any abnormal value (I don’t have unit for compare).
Already try,
So I check “Power Load Switches” and this is all the numbers,
UC830 > 1 = 3.297V ; 3 =1.757V ; 4 = 3.798V
UC840 > 1 = 0V ; 2 = 1.878V ; 3/4 = 5.187V ; 5 = 5.187V ; 6 = 0V ; 7 = 0V
UC850 > 1 = 0V ; 2 = 1.796V ; 3/4 =12.56V ; 5 = 12.56V ; 6 = 0V ; 7 = 0V
UC860 > 1 = 0V ; 2 = 0V ; 4 = 0V ; 5 = 1.798V
UC870 > 1 = 1.801V ; 2 = 1.798V ; 4 = 1.797V ; 5 = 1.798V
Now I hit dead-wall what should I check next ?
This Mac come with dead issues (severe water damage), now it’s turning ON except Trackpad and Keyboard not working.
Already check and write down DM for JT400 and JT201 don’t find any abnormal value (I don’t have unit for compare).
Already try,
- Replacing Trackpad Flex Cable
- Replacing New Trackpad
- Replacing Little Board (Daughter Board)
- Try using New Keyboard
So I check “Power Load Switches” and this is all the numbers,
UC830 > 1 = 3.297V ; 3 =1.757V ; 4 = 3.798V
UC840 > 1 = 0V ; 2 = 1.878V ; 3/4 = 5.187V ; 5 = 5.187V ; 6 = 0V ; 7 = 0V
UC850 > 1 = 0V ; 2 = 1.796V ; 3/4 =12.56V ; 5 = 12.56V ; 6 = 0V ; 7 = 0V
UC860 > 1 = 0V ; 2 = 0V ; 4 = 0V ; 5 = 1.798V
UC870 > 1 = 1.801V ; 2 = 1.798V ; 4 = 1.797V ; 5 = 1.798V
Now I hit dead-wall what should I check next ?