Assuming its fine tuning there is no fine tuning on the set.
Try changing the CATV-NORM switch on the rear top or
antenna board usually.
Next would be resoldering the tuner & MTT conectors.
If they havnt been done they need it anyways.
Then it could be either the 4.5 trap or AFT tank coil
needs tweaking. If you havent done that before come back for advice !!!
73 Zeno
