Yamaha TG77 Installation Manual page 8

Yamaha TG77 LCD Replacement Guide
Fig. 6 - R476 replaced with provided 3.3K Ohm resistor
VR301 CONTRAST VOL. replaced with provided 10K potentiometer
Step 2:
Desolder R476 from the circuit board and solder the provided 3.3K Ohm
resistor in its place. Desolder VR301 CONTRAST VOL. from the circuit
board and solder the provided 10K potentiometer in its place. Reinstall
the circuit board into the TG77 and screw the circuit board back into
place.
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