I would check for loose legs on the memory chips. Try to put a needle between them and gently wiggle\pry each leg side to side to see if any are loose. Tedious, but I have done this many times and fixed many cards that had bad solder joints. Or, you can just reflow all of the joints with a heat gun and flux if you just want to skip right to that step.

Might be worth replacing the electrolytic caps as well. I have come across a few cards this year that had small caps like those from some junk brand and the card would not function with them anymore. I was honestly surprised to revive a dead card from ~2001-2002 by replacing small caps that looked fine. Prior to this, something else always tended to be the problem unless the caps were visibly leaking.

All of the caps near the larger regulator look terrible on top!

paradigital wrote on 2025-08-26, 12:50:

All of the caps near the larger regulator look terrible on top!

I see what you mean when zooming in now (I hadn't seen that on my phone).

To be fair, the image has a ton of processing on it (as most phone photos do these days), so it's possible those are just imagined details by the camera software.

Still, probably worth replacing them if no other cause can be found.