The Bigfoot power supplies for the Amiga 2000 are JUNK! Get an original 225 watt Amiga power supply. They are much higher quality. Just remove the top cover, blow out the dust with a can of compressed air, and replace the fan with a new fan from Japan, Germany, or England. Getting a really good fan is VERY important! If the fan ever goes bad, then the power supply will quickly over-heat and burn up. The best power supply fans are made in Japan, Germany or England. Check for any dark areas on the board, there should be none. Check for puffy or fat caps. If there are any, replace them with new caps. Check for darkened resisters. If any are darker then normal, replace them with new resisters. Also, check the power ICs. Make sure they are firmly secured to the heatsinks. You may have to loosen them up, clean away the old heatsink compound and replace with new compound and tighten back up. If these visual inspections pass, and you do blow out the dust and replace the fan, the power supply should last another 10+ years. :-D
