HP2100 more minor progress

Well, the bad card is definitely A3 in the power supply. This is the card that checks overvoltage, undervoltage, and provides the powerup signal. Unfortunately, my schematics for the power supply boards is correct for all the cards except A3. My schematics are for 2100-60047 and my board is 2100-60109. Since the 60047 version has IC's and my 60109 board does not, I'm a little hesitant to accept the schematic I've got. Sheesh! Also, how come most HP power supplies I've worked with don't have ejection handles on the cards? There always a major pain to remove (wiping off my bloody knuckles <grin>)! Cursory probes with a transistor checker and vom don't reveal the problem. Unless someone here has schematics for the 2100-60109 A3 board, it looks like I'll be calling a dealer tomorrow to find out just how much he'll charge for a replacement board. Grrrrr.... Thanks to all who replied! Jay West