Hi amiga2000,
Just get yourself an original Amiga 2000, 200 Watt power supply and you should not have any more problems. The original stock 200 watt Amiga 2000 power supplies are very high quality. My Amiga 2000HD is 16 years old and my Amiga 2500 is 14 years old. They both still have their original 200 watt power supplies in them and they are both still running strong. In fact, I have never had any problems with them. My advise to you is to only use the original 200 watt Amiga 2000 power supplies, they are the best. :-D