The Melzi board I plan to use in my Mendel90 is a Chinese board by ElecFreaks. Turns out it was one of their older production boards that had 10K resistors in the thermistor circuits (they have told me that their latest production boards have corrected this fault). I managed to replace them with the correct 4.7K resistors (which were cheap enough, just a bit of a PITA working with tiny SMD components like that). The MOSFETS have heat sinks on them, so I was unable to identify them, but the manufacturer told me they are FDD8580's. I will be using a hacked 600 watt ATX PSU (modded per Nop Head's instructions), and a Mk2B heated bed running on 12 volts. Are FDD8580's up to the task? Or will I likely end up letting out the "magic blue smoke"?
