On the heatsink for my T400, thermal grease was used for the CPU and the GPU. There is a third component though covered by the heatsink - which I'd have to look up to know what it is and does. Anyways, instead of thermal grease, there is a thermal pad there.
In removing the heat-sink to upgrade the CPU, I've noticed the thermal pad got slightly dusty and there may even be what appears to be a fine hair or thread of some sort stuck on it.
Should I purchase a replacement, and if so - where can I purchase one? Thermal pads can't be cleaned can they?
I plan to use Arctic Silver 5 on the CPU and GPU instead of the poor quality grease that was there before and have used Arcticlean remover and the purifier to get rid of the existing grease on the CPU and GPU and will apply Arctic Silver in between those components and the copper heat-sink, but the heat-sink has been designed to use a thermal pad on the third component, otherwise I'd just remove it and use arctic silver for it too. So I need to either use the current one or buy a new one.
Your help is appreciated.