This is SO timely, so thank you! I just pulled an old LCIII board out of storage that I had re-capped (badly) several years back, when I was less experienced than I am now. At that time, I was doing two LCIII's at once and only had one working power supply between them, so the fact that one did not turn out and was missing several pads and could have other issues, was not really worth following up on at the time, so I packed it away for later. Much later as it turns out.
Now that I have been having some success repairing boards with damage, I thought I would revisit a couple of earlier failures and see if I could get them to turn out this time around, so I removed the old-new caps, my original attempts at bodge wires, cleaned off the pads and I'm currently cleaning up the board (wow - lot of cap residue remained, so sloppy).
Last night I checked the locations that had missing pads (Did I mention the original re-capping did not go well?) and confirmed where to run the new bodge wires if needed, ordered some ceramic 47uF caps, for another project and included a few extras in the order. Imagine my surprise when I read through this post and saw that one of those would be really handy to use for C22. Interesting discussion on that, so I went and checked the other LCIII that I have been using for years and it was recapped with tantalums, following the polarity direction on the silkscreen, but lo, it has not popped (exploded).
Why? Isn't that the expected result?