RIP-Felix
Senior Member
You tell us. I thought you were talking about the RSX originally. Sounded like victor is talking about the CPU, so I'm cunfused too. Where are you getting the voltage spikes?Ok, but are we talking about the CPU or the RSX now?
The RSX right? I'm a bit confused.
I don't think the IOR VRM are going to be an easy feat, so I would try the easier stuff first. I'm not sure how they are attached (BGA or what-have-you. EDIT: It's LGA). Add a few tantalums and replace the Inductors. Test and lets see what happens. If nothing changes, not a big deal. You can try replacing the IOR.
Before any of that. You did probe every cap and resistor in the filter area looking for shorts? Those components are very important for voltage sensing, so if one is shorting it could easily explain what's happening. Be sure they are good before fixing what ain't broke.
EDIT: to answer your question, yes the voltage output from the VRM can go up like that after the inductor are removed, because now it isn't sensing the output correctly. Or because it's dead...lol!
EDIT2: Looking at the DATA sheet for the IOR VRM they shouldn't output more than 3.3v out max. They shouldn't see more than 5.5v in max. If it's outputting more than that, it could very well be dead. And that would explain the 1002's and 3004! It could also overvolt the tokins, and tantalums you put in. So keep an eye out for the magic smoke, and hold your breath (it's toxic).
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