Hello,
I'm working to repair a Macbook 512K with international board for power.
After a complete recap I discover that the board have a problem and the fuse continue to be burned. So I discovered that the cross diode are broke so replace all CR22 CR23 CR 24 and CR25 now the high voltage is ok and the proper value reach the T3, but all the +12 -12 and 5 volt exit with value very low some volt. So I start to understand if there are in startup section but all seams ok same seam from primary regulator but the value that I see on Q10 are strange, some one call tell me what I need to read in input and output from Q10 so I can understand if I have problem on it or not? or any other suggestion where I can test to understand the problem?
I'm working to repair a Macbook 512K with international board for power.
After a complete recap I discover that the board have a problem and the fuse continue to be burned. So I discovered that the cross diode are broke so replace all CR22 CR23 CR 24 and CR25 now the high voltage is ok and the proper value reach the T3, but all the +12 -12 and 5 volt exit with value very low some volt. So I start to understand if there are in startup section but all seams ok same seam from primary regulator but the value that I see on Q10 are strange, some one call tell me what I need to read in input and output from Q10 so I can understand if I have problem on it or not? or any other suggestion where I can test to understand the problem?
