Your TT most likely only needs cleaning , and lubricating. It has set for many years, so some grease is dried up or the lube is lost. So all moving parts need through wiping, cleaning with alcohol and fresh lube or grease . Electrical and RCA contacts also needs cleaning, etc.
You can DIY if have any liking and time for it. In that case there are good videos on You Tubes.
For service : I find ( on google search ) two places in NY area :
1. DJ Fix, 343 Broadway , Brooklyn
2. Analogique Service Lab, 27 W 20th St. # 406.
I have no experience of these shops , but appear worth visiting to try. Better to call them before going if they will take up Dual 1228 for service .
You can DIY if have any liking and time for it. In that case there are good videos on You Tubes.
For service : I find ( on google search ) two places in NY area :
1. DJ Fix, 343 Broadway , Brooklyn
2. Analogique Service Lab, 27 W 20th St. # 406.
I have no experience of these shops , but appear worth visiting to try. Better to call them before going if they will take up Dual 1228 for service .