Troubleshooting

Use this chart to help you solve daily operational problems. If there is any problem you cannot solve, contact your JVC service center.

PROBLEM

POSSIBLE CAUSE

SOLUTION

 

 

 

The display does not light up.

The power cord is not plugged in.

Plug the power cord into an AC outlet.

 

 

 

No sound from speakers.

Speaker signal cables are not connected.

Check speaker wiring and reconnect if

 

 

necessary.

 

 

 

 

The SPEAKERS 1 and 2 buttons are not

Press SPEAKERS 1 and 2 correctly.

 

set correctly.

 

 

 

 

 

An incorrect source is selected.

Select the correct source.

 

 

 

 

Muting is activated.

Press MUTING to cancel the mute.

 

 

 

Sound from one speaker only.

Speaker signal cables are not connected

Check speaker wiring and reconnect if

 

properly.

necessary.

 

 

 

 

The balance is set to one extreme.

Adjust the balance properly (see page 10).

Continuous hiss or buzzing during FM reception.

Incoming signal is too weak.

Connect an outside FM antenna or contact your dealer.

 

The station is too far away.

Select a new station.

 

 

 

 

An incorrect antenna is used.

Check with your dealer to be sure you have

 

 

the correct antenna.

 

 

 

 

Antennas are not connected properly.

Check connections.

 

 

 

Occasional cracking noise during FM

Ignition noise from automobiles.

Move the antenna farther from automobile

reception.

 

traffic.

 

 

 

No colors on the on-screen display.

The color system of the connected TV is

Connect an NTSC TV.

 

not NTSC.

 

 

 

 

Howling during record playing.

Your turntable is too close to speakers.

Move speakers away from the turntable.

“OVERLOAD” starts flashing on the display.

Speakers are overloaded because of high volume.

Rotate the MASTER VOLUME control counterclockwise three or four times, then press POWER on the front panel.

If “OVERLOAD” does not disappear, unplug the AC power cord, then plug it back again.

Speakers are overloaded because of short circuit of speaker terminals.

Press POWER on the front panel, then check the speaker wiring.

If “OVERLOAD” does not disappear, unplug the AC power cord, then plug it back again.

If speaker wiring is not short-circuited, contact your dealer.

Remote control does not work.

There is an obstruction in front of the

Remove the obstruction.

remote sensor on the receiver.

 

 

 

Batteries are weak.

Replace batteries.

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JVC RX-668VBK manual Troubleshooting, Problem Possible Cause Solution
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RX-668VBK specifications

The JVC RX-668VBK is a versatile and robust A/V receiver designed to meet the needs of home theatre enthusiasts. With its blend of advanced features and impressive sound quality, this receiver is suitable for both casual viewers and audiophiles alike. It is packed with technologies that enhance listening experiences, making it a popular choice among consumers.

One of the standout features of the RX-668VBK is its powerful amplification capabilities. It delivers 100 watts per channel into 8 ohms, providing enough power to drive a variety of speaker setups. This level of power ensures rich, dynamic sound reproduction suitable for everything from music playback to movie watching. The receiver supports surround sound formats, including Dolby Digital and DTS, allowing for an immersive audio environment that draws viewers deeper into their favorite films.

In terms of connectivity, the JVC RX-668VBK boasts an array of inputs and outputs. It includes multiple HDMI ports, facilitating easy connections to modern devices such as Blu-ray players, gaming consoles, and streaming devices. The receiver supports 4K pass-through, ensuring that it can keep up with the latest video formats and resolutions, thus future-proofing your home entertainment system.

Furthermore, the RX-668VBK integrates various audio technologies that enhance sound quality. The built-in DSP (Digital Signal Processing) allows users to select different sound modes tailored for movies, music, or gaming, providing flexibility for different types of content. The receiver also features a comprehensive equalizer that enables users to optimize sound profiles based on personal preferences and room acoustics.

One notable aspect of the RX-668VBK is its user-friendly interface. The on-screen display and intuitive remote control make it easy to navigate through settings and options, ensuring a seamless experience for users of all technical levels. Additionally, the receiver is equipped with a sleep timer and programmable memory functions, enhancing convenience during use.

Overall, the JVC RX-668VBK is a comprehensive A/V receiver that combines robust power, advanced audio technologies, and versatile connectivity options. Its excellent sound quality and user-friendly features make it an attractive option for both home cinema setups and music lovers, ensuring that it meets the demands of today's audio-visual landscape. With the RX-668VBK, JVC continues to establish its reputation as a reliable brand in the home entertainment market.
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