I have no idea what this Sonnet Crescendo etc is. I'm trying to clean
out my e-mail after a 2-week vacation and was struck by the word Sonnet
in your message and in the next one. It was from Small Dog's Tech Tails
<Techtails at smalldog.com> and had the following info:
Troubleshooting Sonnet Upgrade Cards
By Hapy Mayer
Hapy has again found some useful info that would apply to any processor
that has a heat sink, but in this article it is specific to the
processors from Sonnet.
From the Sonnet website:
<http://www.sonnettech.com/>
4. Tech Tips
Topic: Troubleshooting my Power Macintosh G4 after I have uninstalled
the upgrade card and the thermal material no longer covers the
processor die.
Product:
Encore/ST
System:
Power Mac G4 (AGP Graphics) Power Mac G4 (Gigabit Ethernet) Power Mac
G4 (Digital Audio) Power Mac G4 (QuickSilver 2001) Power Mac G4 Cube
Macintosh Server G4
Symptom:
In the course of troubleshooting, or after moving my Encore/ST from one
machine to another, the Macintosh has stopped booting, or started
crashing shortly after booting.
Issue:
When the Encore/ST is installed and the heat sink is attached, the
thermal material on the processor can transfer to the bottom of the
heat sink. When the card cools after operation and the heat sink is
removed, the thermal material can come off with the heat sink making it
difficult to reestablish an effective thermal bond. When this happens
the remaining material must be cleaned off both the processor die and
the heat sink, and a new layer of thermal material will need to be
applied before reinstalling the Encore/ST.
Solution:
Before reinstalling or installing the processor into another machine, a
new layer of thermal material will need to be applied to the processor
die. Before applying the new layer, the residual material will need to
be cleaned from both the processor die, as well as the bottom of the
heat sink. To do this, simply apply some rubbing alcohol to a lint free
wipe and clean the remaining material from both the processor area and
heat sink bottom. Once this is done, a new thin layer of thermal
material can be applied to the processor die. Thermal material can be
purchased at most electronic stores. Radio Shack, for example carriers
a brand called Heat Sink Grease, online catalog #276-1372 at
www.radioshack.com. Simply apply a smooth thin layer of the material to
the center section of the processor die, making sure it covers the
entire area. Take special care that the material is consistently smooth
across the surface of the processor die. This process will need to be
repeated each and ever time the heat sink is removed from the Encore/ST.
If this has any application to your problem I hope it helps.
Now I'll get back to the 156 messages I have yet to read.
Anne Cartwright
On Tuesday, May 13, 2003, at 04:44 PM, Tiffany Cox wrote:
>
> Howdy all,
> ?
> ????I figured since I got so much help here before when my 6500/250
> had it's little operating system problem, perhaps I could find answers
> here again. Like I said, I have a 6500/250 and bought a Sonnet
> Crescendo G3/400MHZ upgrade card for it. I installed the software for
> it, pulled out the guts took the cache out, pushed the little white
> button they told me to push, put in the card and put the guts back in
> the computer. I then turned the machine on and It gout to where it
> starts to load the extensions and froze. I rebooted with extensions
> off and tried to take them out 1 by one to try to find a conflict but
> this was taking a very long time so I took all the extensions out of
> the extensions folder, and tried moving back in one by one to see what
> the hold up was. It boots ok with just the upgrade extension as far as
> I can remember, but it doesn't seem to be compatible with any of my
> other extensions!! This is a pain in the rear! I can't figure out for
> ! the life of me how to get this thing running. I've been running it
> with the extension for the card in a separate folder for a while and
> just playing games on it till I can get my patience back to work with
> it again. In the meantime I'm using my peecee to get online. I want my
> Mac to work! Help!
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