I found this link on your site (https://tinkerdifferent.com/threads/mac-plus-with-a-flup-flup-flup-noise-on-boot.1254/), where there was the same "flup, flup, flup" problem as the one I'm having.
The first thing the link suggested doing was checking the continuity of the blue wire within the video cable that runs from the analog board to the logic board to see if there was any. I placed the multimeter testing rods in each of the plugs (one in the plug of the video cable that gets connected to the analog board and the other in the plug of the video cable that gets connected to the logic board) attached to the blue wire pins (i.e., in each case, Pin 6, +5V of each of the two plugs), but there was no showing of continuity.
If you find there's no continuity, they then suggest that you take a look at the fuse that's hidden within the video cable. There are some pictures on the site showing what that fuse looks like.
I did that by moving the band and viewing the fuse. Attached are several pictures, at differing resolutions, showing the fuse in the video cable that I'm dealing with. The problem is that at least I cannot tell from the pictures if that fuse is blown or not.
Can anyone else tell me, after looking at the pics, whether this fuse is blown and whether or not I need to replace it.
Thanks!
The first thing the link suggested doing was checking the continuity of the blue wire within the video cable that runs from the analog board to the logic board to see if there was any. I placed the multimeter testing rods in each of the plugs (one in the plug of the video cable that gets connected to the analog board and the other in the plug of the video cable that gets connected to the logic board) attached to the blue wire pins (i.e., in each case, Pin 6, +5V of each of the two plugs), but there was no showing of continuity.
If you find there's no continuity, they then suggest that you take a look at the fuse that's hidden within the video cable. There are some pictures on the site showing what that fuse looks like.
I did that by moving the band and viewing the fuse. Attached are several pictures, at differing resolutions, showing the fuse in the video cable that I'm dealing with. The problem is that at least I cannot tell from the pictures if that fuse is blown or not.
Can anyone else tell me, after looking at the pics, whether this fuse is blown and whether or not I need to replace it.
Thanks!
