Can power supply, (line and on board) be tested without a scope. PC clone, W98-1, system very unstable and I suspect dirty power. Located in the country, and in an old building. I use a small APC UPS, but still have frequent unexlained crashes. Would hate to replace motherboard and find the problem was bad power.
Many thanks;
Gene

If your using UPS and the Batteries are in good shape can't see where there would be to much of a problem with the power Not much you can do about dirty power? Thats California for ya Deregulation? You could register spikes & surges,Brownouts, But unless you have acuired a back ground in Electrical engineering I would say your scratching your head over nothing? You could use something like this to test your power.

http://www.elect-spec.com/suretst.gif

Model ST-1-about $180.00
and they go up from there

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Death has come to our windows.

-- Jeremiah 9:21
(undoubtedly a Biblical reference to a Microsoft product!)

YODA74@carolina.rr.com