20 Most Recent JVC RX-778V Questions & Answers

First check all the connections. Something as simple as a loose wire will cause your sub to shut down. If all connections are secure, then your coils on the sub itself may have come apart. To test, try pushing in the center of the sub as it is playing. If sound comes out, it's your coils.

Hope this helps.

Connect it as both devices require (in their manuals), assign the digital input (as applicable).

if it says 110/220 on the bk and there isnt a switch to change to 220 its auto but if it doesnt say 220 on there dont plug it into 220 this unit has a built in power supply so if you do 220 and its not rated for that itll fry.

From the remote control ONLY:

Press MUTING to mute the sound through all

speakers and headphones connected.

"MUTING" appears on the display and the

volume turns off (the volume level indicator goes

off).

To restore the sound, press MUTING again so that "OFF" appears

on the display.

• Turning MASTER VOLUME on the front panel or pressing
VOLUME +/- on the remote control also restores the sound.

A connectivity check could provide the solution, notice any wrong wire connections on device or any other devices requiring interconnection. The woofer would perform properly when the connections that provide current for woofing are approapiate

important notes
1. Trace the connection from Recorder or sound output to the woofer device
2. The wiring connections should be sound and video ouput into sound and video output into woofer.
3. The connections if any problems would be located at the stereo recorder or device producing the spund and video. Check the connections of wires on the recorder device ensuring rewiriing
4. finally, adjust the equalisers if any the buttoms could have been disbled by master switch hindering full blaster boost sound.

There could be a couple of reasons that its overloading one is make sure that there is no bare wire touching at all.The other thing it could be is the ohms rating over your speakers may be to low for you receiver.Most receiver can handle 8 ohms to 6 ohms there are a few that can handle 4 ohms check your speaker ohms rating then check how low your receiver can handle with out going into overload.

The first thing I would check would be fuses... they are internal so you will need to take the cover off. Make sure it's unplugged anytime you have the cover off.

pcm linear refers to how the tv is communicating with the amplifier. Follow the steps in your tv manual to ensure the tv is capable and setup for output of dolby and or dts, then try a dvd or a hd channel to test it

I had same problem and connected antenna to fm port and it worked

Most amplified sub woofers need to be grounded to the output source.If you plug the sub woofer in to the receiver you would use a ground wire from the receiver to the sub woofer there should be a ground terminal on the sub woofer and receiver.

im thinking the reciever is set to get its audio from somehwere other than the dvd, sounds like you did most of the troubleshooting but do you get audio out of the reciever if its just playing the radio or something other than a dvd?

It does have an aux input with two levels but this isn't suitable for a turntable. A suitable input should have RIAA correction with a sensitivity of just a few millivolts for a magnetic cartridge. Instruction manual can be found on the link below... http://resources.jvc.com/Resources/00/00/90/LVT1519-001C.pdf

Here is the user manual; https://www.manualslib.com/products/Jvc-Th-A75r-252593.html