• Updated 2023-07-12: Hello, Guest! Welcome back, and be sure to check out this follow-up post about our outage a week or so ago.

macintosh ED makes ticking sound

mactjaap

Well-known member
I have a macintosh ED which doesn't boot. It makes a ticking sound and no chime.

Maybe someone knows what is wrong?

Here is a video:



 
Last edited by a moderator:

nvdeynde

Well-known member
Given the floppy drive is disconnected, there's a good chance it's the flyback. Can you measure  voltages on the +5v, +12v and -12v rail ? 

Otherwise just de-solder the  flyback and try again. 

 
Top