Had a look at my Chinon SS1200 today, I ordered a new pressure pad for the sound head as the old one looked like the springs were weak on it after a sound wobble, the sound was lower than usual, an easy fix as it's one screw to remove it, cleaned off some old grease and applied some fresh plus a new bulb as I've never changed it in 15 years plus, sound and light now as good as ever,Mark
The old one
The new one
New one fitted