New power supply installed, not sure what the added one was doing.....removed it and the original and nothing changed....except fan nice and quiet now. LEDS in looks good, question is I have some switches dead (outlane etc), what diode should I be getting here 1N4004? Now have replaced the defective cherry rollover switches, only dead switch now seems to be the Jet Exit opto(47). All other optos are functional so figure opto board is ok, going to replace the optos in that area this weekend. May order the updated board from Great Plains to put in too. First machine I've seen with so many dead switches, was this common on the 2000 platform?