Last I checked, Herb was out of stock.
Herb just restocked! I purchased one... although there isn't many, Herb had to get the pins repaired. Hence why I posted here. Herb's an amazing detective for this stuff.If anyone has a spare they'd kindly let go? I am doing a scratch built Amiga 4000 from bare motherboard and accelerator card.
I would love to hear your advice on proper heatsinks! I have an (evidently) non-genuine '040/40 that's unstable at 40 MHz. It reports to have both FPU and MMU, but I've stuck a cheap Amazon heatsink and it overheats and barfs. Would you have a link to a proper heatsink?Finding a genuine non-LC 040 in itself is a win anymore. With a proper heatsink, most that I've tested can go to 40MHz without adverse effects thermally. I think what I might do, if ever spare time wills itself into being, is do general system stability tests (in another thread).
Hey, thanks for the recommendation! I've just looked it up, and I've just noticed that you can get this stuff in multiple thicknesses. Would you have any recommendations/knowledge on why this is the case/what to get?Double-check that the heatsink's adhesion is actually thermal. I've received heatsinks from Amazon sellers with ordinary double-sided sticky tape as well as 3M coated tissue tape (not thermal tape). That will act as an insulator, which is the opposite of what you want.
View attachment 41870
In the picture above, I peeled off the tissue tape, cleaned the part with isopropyl alcohol, and applied a ThermalRight thermal pad.
All the tests were with no heatsink at all.What kind of heat sink are you running during these tests? My current chip (early 25 mhz) runs hot enough I can't barely touch the sink.