Yamaha RX-V793 TROUBLESHOOTING, CAUSE, sound, REMEDY, record, SYMPTOM, normally, No picture, Sound “hums”, or sound is distorted, No sound or no picture

TROUBLESHOOTING

If the unit fails to operate normally, check the following points to determine whether the fault can be corrected by the simple measures suggested. If it cannot be corrected, or if the fault is not listed in the SYMPTOM column, disconnect the power cord and contact your authorized YAMAHA dealer or service center for help.

	SYMPTOM	CAUSE	REMEDY
	The unit fails to turn on when the	Power cord is not plugged in or is not	Firmly plug in the power cord.
	STANDBY/ON switch is pressed, or	completely inserted.
	turns into the standby mode suddenly
		The IMPEDANCE SELECTOR switch on the	Set the switch to the upper or the lower end
	soon after the power is turned on.
		rear panel is not set to the upper or the	closely.
		lower end closely.
	It happens that this unit does not work	There is an influence of strong external	Turn this unit into the standby mode and
	normally.	noise (lightning, excessive static electricity,	disconnect the AC power cord from the AC
		etc.) or a misoperation on this unit while	outlet. After about 30 seconds have passed,
		using this unit.	connect the power and operate this unit
			again.
	No sound or no picture.	Incorrect output cord connections.	Connect the cords properly. If the problem
			persists, the cords may be defective.
		Appropriate input source is not selected.	Select an appropriate input source with the
			input selector buttons.
		The SPEAKERS switches are not set	Set the SPEAKERS switch which
		properly.	corresponds to the speakers to be used to
			the ON position.
		Speaker connections are not secure.	Secure the connections.
	No picture	There is no S video terminal connection	Connect this unit’s S VIDEO MONITOR OUT
		between this unit and the TV, though S	terminal to the TV’s S video input terminal.
		video signals are input to this unit.
Amplifier	The sound suddenly goes off.	The protection circuit has been activated	Turning the unit into the standby mode and
		because of short circuit etc.	then on will reset the protection circuit.
		The SLEEP timer has functioned.	Cancel the SLEEP timer function.
	Only one side speaker outputs the	Incorrect setting of the BALANCE control.	Adjust it to the appropriate position.
	sound.
		Incorrect cord connections.	Connect the cords properly. If the problem
			persists, the cords may be defective.
	Sound “hums”.	Incorrect cord connections.	Firmly connect the audio plugs. If the
			problem persists, the cords may be defective.
		No connection from the turntable to the	Make the GND connection between the
		GND terminal.	turntable and this unit.
	The volume level is low while playing a	The record is being played on a turntable	The player should be connected to the unit
	record.	with an MC cartridge.	through the MC head amplifier.
	The volume level cannot be increased,	The component connected to the REC OUT	Turn the power to the component on.
	or sound is distorted.	terminals of this unit is in the standby mode.
	No sound from the rear speakers.	The sound output level to the rear speakers	Raise the sound output level to the rear
		is set to minimum.	speakers.
		The monaural sound source is played in	Select another program suitable for the
		DOLBY PRO LOGIC or DOLBY PRO	monaural sound source.
		LOGIC ENHANCED mode.
	No sound from the center speaker.	The sound output level to the center	Raise the sound output level to the center
		speaker is set to minimum.	speaker.
		The center channel mode is in PHANTOM	Select NORMAL or WIDE.
		mode.
		Incorrect sound field program selection.	Select the appropriate program.

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