Liberty Oil, The Best 100% Synthetic Oil for Lubricating Your Grandfather Clocks

This is the service manual for it. Link 🔗 https://documents.cdn.ifixit.com/eVxjPkDbVwlKR3bC.pdf It more than likely just needs some TLC! A good cleaning 🧼 and relubrication. Use 91-99% isopropyl alcohol for the cleaning, especially the (tape path) use a good quality synthetic sewing machine or clock oil. The grinding noise could be coming from so many different places motor, capstan, pinch roller, tape take up wheels. You’ll have to sleuth that one out. Here are some guides for your boombox Link 🔗 https://www.ifixit.com/Device/Sony_Radio_CD_player_and_cassette_player_CFD-S05 You should replace the belts on the cassette player once you have it opened up. You’ll have to find a replacement for it. You can try an Amazon multi pack for the replacement. Your belt is a square cut belt, I’m not sure of the exact length. It will be some trial and error. Belts are very difficult to source and most are made in China anyway. I can recommend this oil because I’ve used this to lubricate cassette deck, boomboxes and Walkman https://www.amazon.com/dp/B00AZMGFI4 I’ve also used these belts https://www.amazon.com/dp/B0CZ4549WN You only need two belts for your boombox surely you’ll find a suitable match out of this bunch. Lottsa luck 🍀 with your repair! Take a lot of pictures! And write down some notes 📝