Hi there - your Thorens 124 is potentially very good. However it would need a good service and probably new cartridge. The servicing may be expensive. You also need to identify the tonearm as this will determine what cartridges are compatible or at worst whether you need a new tonearm.
Also if you search Sterophile - the Art Dudley Columns on their website he restores a Thorens 124 which gives you an idea of the tt.
It may be helpful to find someone that owns one of these turntables near you to help.
If you dont have the knowledge to tweak this turntable you might consider selling it. It is worth a lot to collectors and you should get enough money to purchase a new turntable, for example a VPI Classic, that will be easier to set up, particularly if you buy from a dealer and has strong current support from the manufacturer. Check ebay for pricing on the Thorens.
Also if you search Sterophile - the Art Dudley Columns on their website he restores a Thorens 124 which gives you an idea of the tt.
It may be helpful to find someone that owns one of these turntables near you to help.
If you dont have the knowledge to tweak this turntable you might consider selling it. It is worth a lot to collectors and you should get enough money to purchase a new turntable, for example a VPI Classic, that will be easier to set up, particularly if you buy from a dealer and has strong current support from the manufacturer. Check ebay for pricing on the Thorens.