Got a few things, actually.
Here's the fix:
Click here to go to the flickr page, where you can see a full-res version.
Incidentally, we have a new problem. The machine has stopped booting reliably. Seems like just jostling it causes it to either start or stop working. This is what we see, along with the sad mac tune, or whatever it's called.
The pages I've found on various on-screen indicators of different problems don't have any info on THIS particular problem. We think it may be related to a manually-soldered blue wire that looks like it's for the clock speed between the CPU and the GPU, but we're not certain.
ETA: So dropping the machine from a very small distance onto the workbench it's on makes it boot up. There's definitely a bad solder joint somewhere. We checked the RAM and the four removable ICs on the board, so I think it might be something soldered directly to the board. What would be the most likely suspects that we should check first?
Here's the fix:
Click here to go to the flickr page, where you can see a full-res version.
Incidentally, we have a new problem. The machine has stopped booting reliably. Seems like just jostling it causes it to either start or stop working. This is what we see, along with the sad mac tune, or whatever it's called.
The pages I've found on various on-screen indicators of different problems don't have any info on THIS particular problem. We think it may be related to a manually-soldered blue wire that looks like it's for the clock speed between the CPU and the GPU, but we're not certain.
ETA: So dropping the machine from a very small distance onto the workbench it's on makes it boot up. There's definitely a bad solder joint somewhere. We checked the RAM and the four removable ICs on the board, so I think it might be something soldered directly to the board. What would be the most likely suspects that we should check first?