HP Pavilion TX1000 Tablet PC - Replacing the fan (Qs and my plan of attack)

Alright, so I finally got my HP Pavilion TX1000 tablet PC that I mentioned about when I asked a week or two ago about the 3G module. It works quite well, even if it does show it's age, I'm happy with it. One thing I noticed about it was that it heats up quite a lot when sitting idle.
The buyer noted in his listing that the fan might need replacing. It turns out that the system is cooking itself since it doesn't have any exhaust fan sucking the heat out of the vents as the fan is seized. This means when the laptop gets around 70*C, the BIOS safety temperature watchdog kicks in and kills the laptop until the laptop's internal thermal sensor has detected a safe temperature. Judging from Speedfan readings before the laptop shut down, this overheating issue popped it's head up around 70*C.
I got a friend to drop in his MacBook cooler that he uses, and I have it plugged into a USB socket. It is keeping the HP Tablet in a safe (but still warm) 60*C-ish temperature rage. I also got a portable AA-battery powered fan and aimed the fan at the vents, which meant I was "blasting" cool air into the vents. This kept the system down around 45 - 50*C.
I took the laptop apart partially (well, not a complete teardown but enough to see it's fan when it's switched on to see if it's spinning, and I can confirm the fan is not spinning at all, not even when the CPU is really hot, it's just stationary. I looked around and didn't see any wires stuck in the fan or anything, so I'm assuming the fan is seized up (or burnt out).
I've ordered this replacement fan off eBay for my tablet. Spare part number matches apparently: http://www.ebay.com.au/itm/300749320112 .
Now, my question is, is it possible that laptop fans can be seize up in rare events? Don't shun me away and say "Oh no, it would never happen", because fans are moving parts and could seize up if subjected to a lot of heat. I know the TX1000 series are known for overheating woes, so I'm going to ask you this - In your experience, have you seen fans failing, and if so, could a seized motor be the cause?
I am going to follow this guide once the fan arrives (http://forum.tabletpcreview.com/hewlett-packard/8875-modding-tx1000-part-1-changing-thermal-compound...) because I heard that black paint on the heatsink assembly does nothing to help keep the CPU cool, and if I remove it, I can get a 5 - 10*C CPU temperature droppage. Which is good because I don't want it to be burning my hands if I'm using it to jot notes down!
Alright, so that's my plan of attack. Suggestions? Opinions? Encouragement?

Should be able to answer your own question by physically trying to rotate the blades with a thin tool or blowing into the blades & if bearings good it should rotate easily.
bearings fail, fan motor/boards fail, mainboard control & power can also fail !
Most modern equipment has almost no real effort in proper thermal control so some modifications may help but you will be limited in what is achievable on a finished product.
Here in Asia we have done a lot of notebook cooling mod combo's such as vent increases, thermal shims, quality thermal grease & secondary 25 to 30mm 5v case venting fans with internal porting & baffles to help good airflow/heat extraction with great results in reducing overheating & component failure ...
Should be done at the factory !
For $10 of parts we reduced a custom dv2500 with T770 & Nvidea graphics by 25% & made the machine reliable & feel safe rather than a lap microwave ...
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Like my post? Click Kudos (thumb+) to show appreciation.

HP Pavilion TX1000 Tablet PC - Replacing the fan (Qs and my plan of attack)

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