Anyone knows if the heatsink is required on the circuit in the picture?
Do you still have it? I knocked one of mine off accidentally on my Pro-6 some years ago. I got some thermally conductive transfer tape, and put it back on.
I did try to put it back on with some old paste I got when I purchased cpu fan years ago but it fell off and during that whole process my NAS broke. I managed to get it back together by a usb recovery with some help from this forum.
I don't know what actually happened. I will try to upgrade the RAM again and try to implement one change at a time and see if I break it again or not.
Thermal conductive tape sounds like a good approach though.
CPU heat sink compound is not a glue. You can get thermally conductive glue, but it can get messy. Double-sided adhesive thermal tape/pads are what I recommend, and they are available on eBay pretty cheap. 3M 8810 is what I use. Make sure you clean both surfaces well. 99% isopropyl alcohol works great.
That particular heat sink is easily knocked off when replacing a power supply, but can even come loose on its own. I even bought some suitable replacements, having purchased a used system where it was missing.
3M 8810 is what I use. Make sure you clean both surfaces well. 99% isopropyl alcohol works great.
@mikmager - this is also what I used (not surprising as I asked @Sandshark for advice!)
I purchased pre-cut squares ( 16.51MM-16.51MM ) from Amazon - currently Amazon says they are out-of-stock, but you can find them other places - for example
