HI, I just bought a good old Macintosh Classic at a garage sale, it looks fine but th are the symptoms when I try to power it up:
1) No startup sound
2) A horizontal screen of lines
http://s27.postimg.org/4yjx2zg1v/image.jpg
any ideas of the problem?
thanks in advance!
Macintosh SE
Hi,
First of all, a warning: Compact Macintosh computers contain high-voltage circuits. Charges can remain in certain components even after the machine has been switched off and disconnected from the mains. All work inside can be very dangerous. Opening and repairing such computers must only be carried out by someone with the necessary expertise.
It is difficult to say what could be the exact problem in this case. To begin with, a service technician would probably check the logic board battery voltage, disconnect and reconnect cables, and remove and reinstall memory modules. Also, a careful inspection of boards may show signs of leaking electrolytic capacitors.
Hi,
First of all, a warning: Compact Macintosh computers contain high-voltage circuits. Charges can remain in certain components even after the machine has been switched off and disconnected from the mains. All work inside can be very dangerous. Opening and repairing such computers must only be carried out by someone with the necessary expertise.
It is difficult to say what could be the exact problem in this case. To begin with, a service technician would probably check the logic board battery voltage, disconnect and reconnect cables, and remove and reinstall memory modules. Also, a careful inspection of boards may show signs of leaking electrolytic capacitors.
HI Jan! Thanks for the answer. I did that and the logic board don't have sings of problrms, it possible that the problem is at the analog board?
An expert may want to check all boards. A faulty electrolytic capacitor does not necessarily have to be leaking or bulging. Other things to look for could be cracked solder joints, discoloured resistors or semiconductors, and broken/corroded circuit board traces. A magnifying glass may be needed.
Macintosh Classic problem
