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원문 게시자: oldnwstf ,

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Was your logic board recapped properly? If not, then do that first, and also clean the PCB very throughly before you solder the new capacitors. They used a type of capacitors on these machines that are prone to leaking and shorting out the logic board after 15-25 years or so.

Otherwise, it is also very likely a logic board problem, more exactly it could be a Bourns filter problem. So that needs to be replaced.

As the Larry Pina in the book The Dead Mac Scrolls says:

[quote]'''Symptoms:''' On startup, the desktop appears, but neither thekeyboard nor the mouse work.

'''Typical history:''' The problem occurred when you connected ordisconnected an ADB device while the computer was on.

'''Probable diagnosis:''' The problem is on the Mac SE logic board.

'''Solution:''' Check/replace the shorted fiIter (Apple part 155-0007-E) at board location A 11

[image|1686992][/quote]

현황:

open