2300c runs hot — #12

Post #12 by MultiFinder

Source Forum	68kMLA
Category	Troubleshooting
Post Date	Mon, 4 Feb 2008 - 06:17
Original URL	https://68kmla.org/bb/threads/2300c-runs-hot.11627/

Post

I simply bent the heatsink to make contact with the copper-wound transformer (which is insulated). The heatsink is shaped so as to do so, but maybe it is not meant to touch the thing. I think I will ferret out a service manual just to check on your suggestion, since it makes perfect sense.
In response to your whining issues (ha), I had an unstable Duo 280c (capacitor leakage) that had the whine from that area, but I have functional 270c and 280c Duos that are perfectly silent. The 2300c is also silent, but it has some other issues, as we see.

I had a peek at a PB145 logic board the other day. It has no capacitors at all. My Wallstreets also have no cap-capacitors to speak of, excepting the battery charge card. The Duos have lots. This has to be a major failure point in this model; could the whining be related to capacitor failure?

Also, while you're in there, check the condition of the little rubbery-thingy between the CPU and the heatsink. I can imagine that it would break down over time, so might wanna give that the once-over.

That's rather disconcerting about the caps... Mine looked fine when I was in there. Maybe I'll give 'em a better look next time I have this little bugger apart... It's not so much a whine as it is a light hum of sorts. I hope that caps aren't an issue in these laptops. Has anyone else ever had capacitor issues with their Duo that they can share with us?

Also, should you need the service manual, I have a PDF of it. PM me and I can e-mail it to ya.