Thread

Classic/Classic II PSU Capacitors

Classic/Classic II PSU Capacitors Hardware 4 posts Nov 21, 2014 — Nov 23, 2014

#1 Fri, 21 Nov 2014 - 04:31

I have a Mac Classic II that ticks when you turn it on. No hard drive spin up, no display, just tick tick tick tick tick....

I would guess the PSU caps go bad on these models, but how common is it for caps to go bad in these machines? What caps do I need to replace?

Are the earlier compacts less likely to have PSU cap issues?

#2 Sat, 22 Nov 2014 - 03:09

And if the CRT circuitry capacitors need replacement?

#3 Sun, 23 Nov 2014 - 18:24

I've heard this happens when a flyback transformer goes bad... Perhaps a winding resistance check might be in order eh?

#4 Sun, 23 Nov 2014 - 21:30

How would I check the resistance (like what points should I hook a multimeter to) and what should the resistance be?