Apple II over-current issue

Hi everyone, I have an Apple II mainboard I'm trying fix. I really enjoy gettting these particular machines going, for some reason. Maybe it's that emphatic BEEP when they finally run up... anyway... This one has a pretty obvious fault, it sinks too much current on a yet-to-be-determined power supply line. Starting it up, the PSU goes into a startup/shutdown loop. The seller said he'd tested the PS in another machine and found it worked fine. I gave it a quick test and it did seem good, so I fitted another known-good PSU to the machine just to verify - same symptom with the new PSU. Just as a guess, I'm suspecting caps and RAM in that order, but it could be anything. I 've had very little time to play with it so far, but I'm pondering my next step. I've been considering something like this: http://damon4.com/Default.aspx?blogentryid=112 but my bench power supply is a bit basic (i.e. crap), voltage only goes down to 3V or so, and no adjustable max current. Not really any good for this approach. Also, I'm not sure if the Apple II (US DM Plus, in this case, 4116 RAM) needs the PS rails to come up in a certain order to avoid damage. Overall, perhaps a bit too violent for this situation. My ideas so far: 1. First thing I'll do when I get back to it is discover which PS output is being overloaded. That might eliminate a few suspects. 2. If I'm desperate and step 1 suggests it, remove all the RAM ICs. Doesn't take long, and I could also inspect the legs on the things, which seem to fail with surprising regularity. 3. Panic. Hopefully this doesn't involve removing every IC on the board, but I'd be willing if that's the safest bet. I'm sure this has been discussed before, but at the moment Google isn't being helpful with discussions on this list. Can anyone refresh my memory/point me at resources/make a sensible suggestion or two? Admittedly I'm at a really early stage without a great deal of info to put forward, but sometimes just discussing these things helps clarify the approach before I really dive into it. Cheers, Mike