At 06:36 01-05-98 +0300, "Hotze" <photze(a)batelco.com.bh> wrote: Aha! Tim, I think I recall you mentioning that you had swapped the motherboard. If you haven't done it already, check underneath the M'board to see if one or more of the metal threaded standoffs is touching a trace on the board. (I deleted previous messages in this thread so don't recall if you did this already.) Actually, check if _any_ metal thing is touching the board in places which it shouldn't. If that trace is a supply line, then the PSU will shut itself down because of a short circuit. If it is indeed shorting a supply line to earth then find some sort of insulating material and affix it to that location(s) on the board. Use a piece of very heavy paper or plastic sheet at least, say, 0.60" (1.50mm) or so thick. I speak from personal experience on this one. Also, look on top of the board and see if there's a metal chip, tiny screw or whatever lodged between IC pin leads, resistor leads, connector leads, etc. I have seen this before also, less likely possible in your case, but give it a good visual in bright light anyway. Usually, but as I've mentioned above with my experience, a few clone boards lacked a mounting hole or two and underboard traces interfere with existing mounting standoffs. Kinda dumb as the clone board manufacturer _should_ have stuck by the de facto mechanical standards but sometimes they made "shortcuts". Good luck --Chris -- -- Christian Fandt, Electronic/Electrical Historian Jamestown, NY USA Member of Antique Wireless Association URL: http://www.ggw.org/freenet/a/awa/