Unfortunetly, once a record is scratched it can not be repaired. Noise can also be caused by dust or grunge in the grooves of the disc. I use a Nitty Gritty Record Doctor III. $299.00 at Audio Advisor. You need to get that stuff off the disc, not just smear it around. It is the least expensive of the effective machines. I have owned it for a few years and it works great. As far as solvent,save your money for music and use Windex Glass Plus or mix one part alcohol (clear, no additives) and one part mineral water, and a few drops of Joy. This will give you a clean disc,but won't help with scratches. Seperate your quiet discs from your noisy ones. Some day you may want to go back and listen to the noiser discs for one reason or another. What makes records better than CDs is the soundstage, dynamics, and the removal of those cloudy vails that seem to cover the music on our CDs. Records are more trouble to play but for serious listening a scratch free quiet record is the best. I hope this helps. Enjoy!