I did follow the schematic, and I apologize for not reporting the voltage readings. TP101 reads 1.112 vdc and TP102 reads 8.31 vdc. TP101 does not vary when turning the tune dial, but TP102 varies when I turn the dial.? U101 pin 1 reads 1.112 vdc and pin 5 reads 5.41 vdc and pin 1 does not change with movement of the tune dial, while pin 5 does vary. This led me to believe the Optical Interrupter was at fault since I can change the direction up or down with changing U1 and U2 of the optical device.? Again I apologize and will try and keep everyone informed in the future.
