I suspect some of the LPs that I was able to revive were casualties of bad prior cleanings, rather than kludgey tone arms on changers which caused groove chew.
Hi @whart , I completely agree. There’s a well-known vinyl store in Oakland CA that kind of specializes in jazz. Great LPs, but I noticed a lot of static pops on many I bought there. Proper cleaning and vacuuming only helped so much. The owner is a deeply knowledgeable guy who has participated in nearly every aspect of the record biz since the ’70s. But still. One day I watched him "clean" a batch of consignment LPs by rubbing a damp cloth around their surfaces. Aha! No wonder. As much as I want to support him, I stopped buying records there. Once those particles get cemented in, it’s very difficult to get them all out.