HP G62 heatpipe mod
I've done this before but i don't know whether i've posted it.
I bought myself a HP G62, Intel/ATI version, to fix, possibly upgrade and resell, since i found the whole notebook including adapter and box for ~$74, which seemed a good price, especially since it's in very good condition.
Configuration: P6100/3GB/320GB/512MB. Battery holds some charge too, not tested yet, but it says 23Wh remaining capacity so it should do about 1 hour of internet use.
The guy i bought it from told me it had never been serviced. Said it's been having overheating issues for a few months so he brought it to a shop for cleaning, but it was too late as it died 2 weeks later. I said that maybe they did not do a good job but he assured me he went to some trusted repairmen... Anyway, i bought it.
Package arrived today. Notebook and adapter in the original box, complete with all original packaging, leaflets, expired warranty, the whole lot. Nice.
I pulled out the notebook, plugged it in, hit the power button... and the screen lit up.
It said "CMOS Reset" and then "Fan Error". Hmm... that's not quite dead, is it. I did not let it go further and proceeded to take it apart.
The fan looked clean, however a few large dust bunnies had the blades stuck. Looks like whoever cleaned this just blew some compressed air in it and called it done. They also used cheap white goop for thermal paste - and did not bother even cleaning off the factory paste before applying it! Also one of the screws that secured the heatsink to the GPU was not tight. With such an excellent cleaning job, no wonder the thing "broke"!
I cleaned the fan properly and replaced the paste. Laptop booted up just fine, couldn't get it to crash or do anything weird, but the GPU ran a little hot for my liking, so i proceeded to bending the heatpipe to allow it to contact the GPU directly, without the thermal pad. I've done this on another one before, with very good results. This one ended up even better than the last one. Just check the pics.
Here's how you do it:
The last step is is optional but will ensure the heatsink doesn't detach from the GPU, as the holders are rather weak. For this purpose i used an adhesive electrically conductive sponge that i removed from another heatsink, you can use whatever you see fit. It doesn't need too much pressure, you don't want to bend the board or bloat the case.
Do not apply too much pressure to the heatpipe and take your time. You want a good fit of the heatsink on the GPU but don't wanna choke the CPU end either, as that would be really bad!
No shims, no undervolting, no maxed out fan, no nothing. Just bending a piece of copper that came stock with the thing did this for temps. Whatcha think?
I bought myself a HP G62, Intel/ATI version, to fix, possibly upgrade and resell, since i found the whole notebook including adapter and box for ~$74, which seemed a good price, especially since it's in very good condition.
Configuration: P6100/3GB/320GB/512MB. Battery holds some charge too, not tested yet, but it says 23Wh remaining capacity so it should do about 1 hour of internet use.
The guy i bought it from told me it had never been serviced. Said it's been having overheating issues for a few months so he brought it to a shop for cleaning, but it was too late as it died 2 weeks later. I said that maybe they did not do a good job but he assured me he went to some trusted repairmen... Anyway, i bought it.
Package arrived today. Notebook and adapter in the original box, complete with all original packaging, leaflets, expired warranty, the whole lot. Nice.
I pulled out the notebook, plugged it in, hit the power button... and the screen lit up.
It said "CMOS Reset" and then "Fan Error". Hmm... that's not quite dead, is it. I did not let it go further and proceeded to take it apart. The fan looked clean, however a few large dust bunnies had the blades stuck. Looks like whoever cleaned this just blew some compressed air in it and called it done. They also used cheap white goop for thermal paste - and did not bother even cleaning off the factory paste before applying it! Also one of the screws that secured the heatsink to the GPU was not tight. With such an excellent cleaning job, no wonder the thing "broke"!
I cleaned the fan properly and replaced the paste. Laptop booted up just fine, couldn't get it to crash or do anything weird, but the GPU ran a little hot for my liking, so i proceeded to bending the heatpipe to allow it to contact the GPU directly, without the thermal pad. I've done this on another one before, with very good results. This one ended up even better than the last one. Just check the pics.
Here's how you do it:
- Gently bend the heatpipe downwards at the CPU side
- Bend it back upwards at the GPU side
- Apply a very small amount of paste to the GPU, mount heatsink and check the footprint and spread of the paste.
- Repeat until paste spread is uniform.
- Apply a bit more paste, fit the heatsink.
- Glue a support on the heatpipe, over the GPU side, so it is supported by the bottom case.
The last step is is optional but will ensure the heatsink doesn't detach from the GPU, as the holders are rather weak. For this purpose i used an adhesive electrically conductive sponge that i removed from another heatsink, you can use whatever you see fit. It doesn't need too much pressure, you don't want to bend the board or bloat the case.
Do not apply too much pressure to the heatpipe and take your time. You want a good fit of the heatsink on the GPU but don't wanna choke the CPU end either, as that would be really bad!
No shims, no undervolting, no maxed out fan, no nothing. Just bending a piece of copper that came stock with the thing did this for temps. Whatcha think?
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