I had received an HP Pavilion s3137c PC in for repair. The machine was doing some pretty funny things. The machine after about 3-6 minutes of use would just start rebooting. I originally thought it was to do with either RAM, Power supply or something was over heating. When ever I see this I always put on more thermal grease on the processor. First thing to do is to clean the processor and the underside of the heat sink with lint free material that is soaked with rubbing alcohol. This helped but the machine still seemed to reboot now every about 8-10 minutes.
Next I went on to test the other components. They all came back fine. This had me puzzled. I went back and triple checked all the capacitors looking for one to have a slight bulge. Still nothing.
I talked to the client and they said they had absolutely no luck with this machine. It was sent back during the warranty period twice.
I went back and looked at the machine and I noticed that the south bridge heat sink was getting really hot. I wondered if the heat sink on the processor could be turned around to blow air across the processor and the south bright. Turns out you can! Originally the heat sink fan was near the rear of the machine. I turned it 90 degrees and re-installed it.
The machine is now been running for almost 48 hours with no shutdowns! I wonder if this was a flaw in the design of the HP Pavilion Slimline s3137c? I am wondering during the warranty period did the heatsink get install incorrectly? I will have to check too see if I can see a hardware manual of the machine. I will post pictures how I installed the heat sink soon.
*Update* – Sorry – Here are the pictures:
The fins should be pointing away from the power supply. When I looked at the computer they were facing to the back of the machine where those holes are. The fan should be close to the power supply. By doing this the fan for the processor is doing two more things. Removing the hot air from the power supply, (It’s still cooling the processor) and then the air goes over the south bridge helping to cool it as well.
You should clean up the thermal grease off the processor and the heat sink. The main thing you need is rubbing alchohol and some kind of cloth/rag that is lint free and clean. You will most likely never be able to use the cloth again. I use this product to clean the processor and it works great!
You will need to re-apply the thermal past to the processor. I recommend using ceramique. Your local computer store will sell this for around 8 or 9 dollars Canadian.
Put a little blob directly on the processor. You don’t need very much. Then place the heat sink down like you saw in the first picture. Re-screw in the heatsink making sure not to wiggle it.
The Machine has now been running for 4 days straight now! 🙂 Good luck!
*Update 2* Official Repair manual – HP Pavilion Slimline s3137c Repair Manual