Yamaha A-S700 Service Manual (English)

Other manuals for Yamaha A-S700

Questions and Answers:

G
Gary MartinezAug 19, 2025
What to do if my Yamaha A-S700 Amplifier has no sound?
- V
  Veronica LindseyAug 19, 2025
  If there's no sound, first, ensure the mute function isn't enabled by pressing the MUTE button on the remote. Check that the stereo cable for audio units and the speaker wires are connected properly; defective cables could also be the cause. Make sure the correct input source is selected using the INPUT selector on the front panel or the remote. Finally, verify that the SPEAKERS selector is correctly set to A, B, or A+B.
J
John BruceAug 21, 2025
What to do if my Yamaha Amplifier doesn't turn on?
- G
  George GordonAug 22, 2025
  If your Yamaha Amplifier isn't turning on, make sure the power cable is fully connected. If using the remote, ensure you're pressing POWER on the front panel to ON. If the issue persists, there may be an internal problem; disconnect the AC power cable and contact an authorized Yamaha dealer or service center. If you notice any unusual smells or noises, do not turn the power on and seek professional repair.
D
Debra RiddleAug 25, 2025
What to do if my Yamaha Amplifier remote control is not working?
- B
  billylaneAug 25, 2025
  If the remote control isn't working, ensure you are within 6 meters (20 feet) of the front panel and no more than 30 degrees off-axis. Also, try replacing all the batteries, as weak batteries can cause malfunction.
L
Lynn HicksAug 26, 2025
What to do if the sound suddenly goes off on my Yamaha A-S700 Amplifier?
- D
  Daniel ChavezAug 26, 2025
  If the sound suddenly cuts out, verify that the IMPEDANCE SELECTOR setting is correct. Also, check that the speaker wires aren't touching each other or shorting against the rear panel, then turn the power back on.
M
Matthew MontgomeryAug 30, 2025
Why is the sound degraded when using headphones with my Yamaha A-S700?
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  Nancy RamosAug 30, 2025
  The sound quality may be poor if the power of the unit is off or if it is in standby mode. Turn on the power to resolve this.
R
Rebecca MorrisonSep 1, 2025
Why is the volume level low when playing a record on my Yamaha A-S700 Amplifier?
- T
  Trevor VargasSep 1, 2025
  If the volume is low when playing a record, check that the turntable is connected to the PHONO jacks. Also, if you are using a turntable with an MC cartridge, switch to one equipped with an MM cartridge.
A
Amy SmithSep 3, 2025
Why can I only hear the speaker on one side of my Yamaha A-S700?
- J
  Jeffrey HurstSep 3, 2025
  If you only hear sound from one speaker, check the cable connections to ensure they are properly connected. If the issue continues, the cables may be defective. Also, check that the BALANCE control is set correctly.
M
Michael BarnesSep 5, 2025
Why does my Yamaha Amplifier sound lack bass and ambience?
- C
  Cindy WilsonSep 5, 2025
  If you notice a lack of bass and ambience, check that the + and – wires are correctly connected at both the amplifier and the speakers. Reversing these connections can cause this issue.
R
Robert SullivanSep 7, 2025
Why is there a humming sound coming from my Yamaha A-S700?
- E
  Erin MasonSep 8, 2025
  If you hear a humming sound, ensure that the audio plugs are firmly connected. If the issue continues, the cables may be defective. Also, if using a turntable, make sure it is properly connected to the GND terminal on the unit.
S
stephanie58Sep 10, 2025
Why can't I increase the volume or why is the sound distorted on my Yamaha A-S700 Amplifier?
- D
  David BellSep 10, 2025
  If you cannot increase the volume or the sound is distorted, check if the component connected to the LINE 2 REC or LINE 3 REC terminals is turned on. If it's off, turn it on.

Yamaha A-S700 Specifications

General

Impedance	4 Ω
Frequency range	10 - 100000 Hz
Maximum input power	320 W
Total Harmonic Distortion (THD)	0.012 %
Radio Data System (RDS)	Yes
Connectivity technology	Wired
Headphone connectivity	3.5 mm
Product color	Silver