[weblacky]

Yo All,
 I've officially started my Indy Nidec PSU rebuild work, I disassembled a unit I know doesn't work but that I've already washed clean (and doesn't need any case work).

I'll be posting images I've taken in our image system in a few days.  But I've finally gotten all electrolytic caps off (one requires you to melt through a lot of adhesive, so more on that trick later).  I need to re-examine my cap collection but I think there is one I have that's missing from this list: https://wiki.preterhuman.net/SGI_Indy#Ca...ly_unit.29

But the rest correctly correlate with my findings, though I'm also tracking manufacturer and family series in order to find the correct upgraded family lines to put in with compatible characteristics and ESR.

But while I need to take a break in the next two days for work-related stuff, I thought I'd post because I ran into an issue identifying parts, and I need the community's help!

While these are parts aren't broken, I wanted to make sure I can find correct replacements for several item.  I've decided NOT to replace the Suppression EMI filter caps because finding new ones with the right footprint has proven very difficult and because the parts measure fine off the board.

So the parts I need help with are (I think), are a varistor (MOV) and an XY Cap?  These are extremely close to the AC line and basically among the first line of defense.

Please see attached pictures.  They MAY have been made by muRata.  While technically they seem to be fine.  I wanted to try to find replacements as they are there for safety and I thought A. perhaps I'll run into a PSU with MOV damage and need to a new MOV and B. Perhaps a new MOV and safety caps would be safer/faster/better?

So anyone you can help ID these, please help!

I've tested nearly all the ICs on the main PCB, I've gotten datasheets for nearly all the ICs (excluding small transistor like items) for the daughter card (where the opto-couplers live!).  So that needs to be tested as well.  I also need to start recording some of these test values for my test system.  

So far, things are going good, there was zero leakage of anything, but I will say, there is ZERO chance of you doing all the caps without a desoldering gun and even then I had to re-solder and add and desolder a few times to penetrate the entire PCB via for caps, transformers, and semiconductors. The vias are smaller than you'd expect on this board.  So most cannot be cleared with simple desoldering braid easily (many attempts would be needed).

However layout is OK, and there are only a few items that aren't accessible unless you desolder the majority of parts (like hidden titanium caps and resistors right under FETS).

I'll be posting more, don't worry.  I want to race ahead so I can place a DigiKey order and work for a few days while it arrives.  So I'm eager to find the answers.  Also, I'm cheating slightly on this PSU as I ran across a small tidbit of advice years ago on common failures (I will repost that, since it's not from my research).  However, so far none of the common components they flagged tested as failed. So this thing might just be Caps-only.  But I need to clear the basics on the daughter board before I make such a claim.


Thanks for any help and I will be continuing this post with more pics, I just don't have the time to prep them now, I will later, promise!