PCB Failing - The cleanening

Here is the board from the 9122D cleaned up and tested. Next step is to coat the tracks using the new solder mask.
Yes, I also know that cleanening isn't a word but I thought it was still appropriate...

[@PixelSchnitzel]

I love the title. :-) Looks like you've got things under control.

[@SidneyCritic]

I got a spray can of PCB sealing lacquer from the electronic shop to totally seal my PCB from every angle.
I would have a crack at resoldering the traces to see if it gets rid of those dark spots.

[@davidv1289]

Looks like it cleanened up pretty well! Wonder if that drive unit was connected to a piece of HP laboratory/medical equipment at some point in its career and was exposed to chemical/reagent fumes?

[@vidasvv]

Nice job of cleaning it up, tnx 4 sharing!
73 N8AUM

[@MDFRESCUER]

Good video.

[@tgsoapbox]

Thanks - Sorry about the delay but this comment just appeared in the UA-cam Studio - Wasn't there a couple of days ago and you clearly posted some time ago so I can only blame the Studio Beta :)