If you follow my instructions, you'll have to work hard to screw things up. It's really not that scary once you get into it.
I've spent an entire career designing, developing and patenting metal, engineered plastic and vinyl products. I know plastics, their strengths and weaknesses. I also know how to fix things. This is one of those fixes.
I'm also not responsible for any disasters that might befall you. If you try this and somehow manage to screw it up, don't blame me. Use caution and common sense. It works for me and that's all I can attest to.
That being said... Let's begin:
Hopefully, most records you pick up at yard sales, Goodwill and flea markets can be brought back to new using standard cleaning methods. This is only for those discs that still have elevated levels of pops and clicks due to physical damage due to accident, neglect or abuse.
The record in the first photo is one such case. When I pulled it from the jacket, I could see immediately it had gone through a rough life. Under the microscope, the grooves were embedded with crud and the lands (the space between the grooves) showed signs of extreme wear with hundreds of vinyl "deflections" along the edges of the grooves.