What's underneath the AirPort card?
I've been having heating problems for some time and have decided to finally roll up sleeves and have a good clean out; now in the process of preparing for the job, which in the first instance will involve swapping the dead optical drive for a PATA/IDE HDD caddy with current (320GB) HDD and installing new (60GB) SSD. But that's just the background, not the question.
The question is, what is underneath the AirPort card, because it's always getting warm to hot on that side of the machine faster than it is where the CPU, heatsink and fan are. Now, I intend to take the fan and heatsink out for a !@#$ good clean while I'm there swopping out the optical drive, but the heat isn't coming from that side of the machine; it's coming from (underneath?) the AirPort card. So, what is that chip under the card and what can I do about it getting too warm too often. I had even thought of simply removing the AirPort card to enable increased airflow to that side of the machine, but that is actually a significant impairment to functionality, which I'd rather avoid. Any suggestions?
I will, by the way, be removing the thermal paste and applying fresh when I clean up the heatsink and fan. Perhaps that will be sufficient and I'm just overthinking this?