Hi all,
Thought I'd add a few comments because I think my MBP has been suffering the same issues described in this thread, and more particularly because it's recently got a
lot better…
Bit of background: I have a MacBookPro1,1 built in early 2006 and which I purchased as a refurb in June 2006. It's pretty much the top 15" model of the time; 2.16GHz, 256MB ATI x1600, 7200rpm 100GB drive, 2GB ram. Ran pretty hot from day 1 🙂
It's had a few other problems - the most serious of which was that both the left and right fan died towards the end of the first year. It was a few months before I got around to opening the machine up and replacing them; in the intervening time I still used it, and CPU temperatures were regularly up in the 80s and 90s.
I also started experiencing two very occasional 'glitches' quite early on (before the fans died) both of which have been well described in this thread:
1) One pixel high horizontal lines appearing on screen.
2) Often preceded by the above, the machine hanging, with sound still playing, the pointer still active, but the keyboard and everything else unresponsive, forcing a hard power off and back on.
For a while I put these problems down to driver bugs, but as they gradually became more and more frequent I started to notice a pattern: the horizontal lines seem to coincide with the machine getting hot, whilst the machine would typically hang when performing particular graphics operations, often freezing part way through zooming the dock, minimising a window etc.
I recently even found a reliable way to reproduce the hanging problem - playing Nucleus (
http://www.pangeasoft.net/arcade/info.html) for 30 seconds or so without artificially boosting the fan speed.
So… about 2 ago I was ready to throw it out the window after it'd hung 4 times in the space of an hour, but I decided to take it apart again and see what state the insides were in; I've long known about reports of too much thermal compound having been applied to these early MBPs, and was toying with the idea of replacing it with some Arctic Silver. So this time I went all the way down to removing the motherboard, and found that:
1) The air vents through which the fans expel hot air were blocked (from the inside) by big wedges of dust, almost like snowdrifts in shape.
2) The thermal compound between the 3 chips and the heatsink was a thick, dry, solid layer covering not only the surface of the chips, but in the case of the GPU it also completely covered several contacts on the board itself. There was obviously far too much of it.
3) To my surprise, the insides were otherwise quite clean and didn't show any sign of overheating.
I removed the dust and desiccated thermal gunk, cleaned up the chips and heatsink and applied a small amount of Arctic Silver in its place.
The result:
1) No horizontal lines have appeared since the operation.
2) Temperatures are much lower.
3) I've not seen any problems minimising windows, zooming the dock etc.
4) But… it would still hang after 30 seconds or so playing Nucleus, unless I forced the fans to run at about 3500rpm+.
Happy that it was back in a useful state, yesterday I upgraded it to Snow Leopard (from Tiger). For much of the last 36 hours it has been very busy and very hot, installing, upgrading, compiling, Time-Machining, etc. Not only has there not been a single glitch so far, I don't even seem to be able to force the problems to occur any longer - for example, I've just played Nucleus for 15 minutes.
Difficult to know exactly what has fixed what, but my MBP feels almost like a new machine at this point.
Mark