Yeah i get carried awayGoodTop is recommending I try a 12V2A power adapter. I really don't think that's the issue. Your heatsink replacement process seems like a bit more than I'm willing to undertake, but I may consider at least finding a slightly bigger one than the original.
I already use a 2a PSU on mine actually i think its 2.5 i left another psu there when i replaced the switch its from a QNAP QSW 1108-8T that got retired
