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The fault is on the tuner section of the receiver. FM radio signals are processed by one IC in the tuner section. Since you can hear the station, it won't be that one. The only other is the Stereo Decoder. The radio signals are passed to this and that splits the signal into the left and right channels. If you can't here one of the channels then the Decoder IC will have failed. If you are lucky the board will label the IC, otherwise find the tuner section (look for coils). Then read the numbers of the IC's. If there are several enter each number into Google and find what it does. If you find one that says "decoder" or "FM multiplex" that is the one you need to replace.
Unfortunately, there is a limitation on the JVC LT47P789 digital optical audio out. This audio output does not get the signal from any HDMI source. This is described on page 49 of the user manual. The manual is available from JVC here: http://resources.jvc.com/Resources/00/01/14/YA653ien.pdf . There is a similar restriction for the analog audio output from the TV with the HDMI inputs.
If you use the component audio/video inputs on the TV from your set-top cable box and DVD player, then the optical audio output will work. Otherwise, you need to find a way to connect the audio directly to the receiver. Some receivers have multiple HDMI input ports. These then forward the video signal on their HDMI output to the TV. Another option is to connect the analog audio outputs from the cable box and DVD player to the receiver. This may require resetting the Audio output from these set-top boxes to keep from sending the audio over the HDMI cable. With the Cinemate, you might need some sort of audio input switch or an HDMI converter and switch that separates the audio from the video signal.
I hope this helps. Please add a comment with more information about your devices for ideas on how to work-around the problem with this JVC TV.
Appears that your multiplex circuit in receiver is fubar. Also make sure that your receiver is set to the Stereo mode since the mono mode will also turn off the tuner stereo section.
If you try a known good speaker on each of the four outputs of the stereo and you get nothing from any of the outputs, the outputs in the stereo is bad.
Problems of this nature are often caused by electrolytic coupling capacitors. If you have access to an audio signal generator. Inject signal at volume control and compare left and right output levels. This will isolate fault to pre amp stage or power output stage. freezer can be very usefull in isolating this type of fault.
The contacts in the A B speaker selector switch had degraded on my NAD 7130 receiver. Distortion and signal loss would come and go. Contact cleaner and wriggling the swx knob became useless. Then, years ago I jumped the swx with small lengths of bare wire and tinned the whole thing with solder. Never had a problem since and it probably improved the receiver because it eliminated a component in the output stage that could (and did) introduce distortion.
the out or the output of your JVC turntable is going to input in the equalizer and the output of your equalizer is going to speaker then works fine try this....
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