Question about JVC TH-C5 System

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Radio antenna I can not having good raception of fm. The sub woofer system is not switch on even no power led indcate. check the DNS system cable it is ok. DVD and radio reciver working i can get sound from the headphone conection.

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: JVC TH-M303

Well this is and isn't a fix. I don't know what the underlaying problem is that causes the Amp to shut down but I have come up with a way to stop it from doing so. What ever the problem is it is triggering a circut on the board called "Protect" which can be circumvented. You need to start by pulling out the amplifier unit from the subwoofer assembly. You will see that there are two circut boards at 90 degrees to each other that are connected by 3 sets of connectors. You need to remove the screws and wire that hold in the board attached to the bottom of the assembly. You can then pull it out disconnecting the connectors. The connector closest to the power trasformer is the one that we are concerned with. On the vertically oriented circut board you will find a small map of the connector identifying pin #5 as "Protect". Inside the portion of the connector attached to the bottom board that you pulled out, use a small set of needle nose pliers to break off pin #5. Then reassemble the amp and put the subwoofer back together. I used this solution and it has been working since. If you have reservations about breaking the pin out then try just bending it out of the way and partially reassembling the unit and powering it up. Once you see that it does indeed solve the problem you can break it out. Like I said, I don't know why it started to turn off spontaniously in the first place but this does fix the problem.

Posted on Sep 25, 2007

  • 1 Answer

SOURCE: WOOFER NOT WORKING JVC th-m606

I'm having the same problem. It seems that the mosfet's shorted blew up a capacitor and took some surface mount parts with it. It will be the middle board with the metal shroud (shield). The mosfets are almost impossible to find, I have replaced them (as well as other parts) but still have yet to find the problem. I'm now trying to find the subwoofer amp board (part#LVA10505).

Posted on Feb 23, 2008

SOURCE: Setting Up Surround Sound with satellite tv digital tuner

What model do you have?

You should be able to plug the audio/video output from the satellite TV system into the audio/video input on the JVC system. Then set the JVC system to the appropriate input.

I need to know the exact model to know how or if this is even possible. Some JVC models don't let you input any additional devices. Others might not have the inputs that are necessary for surround.

Posted on Mar 19, 2008

SOURCE: No sound

can i play my th-s3 dvd player without soundround sound, though tv and get sound?

Posted on Sep 14, 2008

  • 1 Answer

SOURCE: NO SOUND From JVC TH-S5 Home cinema system

I know this is an old topic however someone somewhere might benefit from this feedback. I purchased the JVC TH-S5 service manuals from ManualsParadise.com and after metering all the supplies as 'OK', I then focused in on the 'common' lines associated with the two onboard power amps IC's (STK413-400) and found that they were missing a bias supply. This is derived from the onboard 40v Supply 'dropped' down by a 47 ohm resistor R2702 (rated 1/4 watt but advised to make this at least 1/2 watt). The resistor was found to be open circuit i.e. a very high ohmic value. Looking at the circuit diagram again, I would feel that this is going to be a common issue with this unit.

Mike.The.Cork

Posted on Sep 12, 2009

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1 Answer

Am works on radio but fm does not


FM requires a good antenna connection. Check the connection at both ends, and check for any damage to the antenna cable. If you have the rear mounted power antenna, the cable runs forward under the carpet to the dash.

If the antenna is good, then the FM section of the radio has failed.

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I recently picked up the THC-c60 system without the supporting amplifier. Can I still use the subwoofer and the speakers without the amp? I note that it also came with a DIN cable, is there some way to...


You can use the sub-woofer and the speakers even without a supporting amplifier. The sub-woofer alone is powered with 167w per channel enough to power all the speakers. The DIN cables used to connect the sub-woofer to any source device like a computer, multi-media projector and others.

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Poor fm radio reception on 07 ultra classic with whip antenna,problem just recently started.


If anything has been added to the electronic system (hid lights, led lights, hidden antenna, amp), interference can result.

If not, check the cable and connections at the radio and antenna, vibration may have caused them to come loose.

If all is secure, your radio may need to be realigned. Contact iron Cross Audio for repair options.
www.ironcrossaudio.com

Oct 11, 2010 | Harley Davidson 426290 AM/FM Radio

1 Answer

Am/fm radio stations not clear... I have the AM antenna attached... but there is no attachment for FM


First of all check for any nearby source of interference.....Move your unit away from all computers, fluorescent lights, neon lights, microwaves, cell phones, and cell phonemag-glass_10x10.gif chargers. These devises tend to produce noise in the medium frequency band, where AM radio is broadcast.
If the unit plugs into the wall with a nonpolarized plug (where both prongs are the same size), try reversing the plug inmag-glass_10x10.gif the outlet. Moving the plug to another outlet might help, too.
check for fault in the antenna lead, (common) or bad earth on the antenna to body
If you don't have an antenna connected to your FM receiver,With a receiver or tuner, connect a wire-loop or T-shaped dipole FM antenna to the back of your unit. Move the antenna until you get the cleanest signal. Use a signal-strength meter or display to gauge signal strength if your unit has one.
  • Step 2 If you're still not getting a good signal, try an indoor amplified antenna, which you'll find at an electronics store. Don't buy one unless you get a guarantee that you can return it for full credit if it doesn't solve your reception problems.
  • Step 3 If your signal is weak because you live a long way from the transmitter, install an outside antenna and mount it as high as is practical. If you're primarily interested in getting signals from one station or from a group of stations in one direction, get a directional antenna and point it toward the transmitters.
  • Step 4 If you're using a portable FM radio where the only antenna is the power cord, stretch the cord as straight as possible and experiment with positioning again.
  • Step 5 Temporarily switch to monaural mode to improve a weak signal on an FM receiver.

  • Read more: How to Strengthen FM Radio Reception | eHow.com http://www.ehow.com/how_114024_strengthen-fm-radio.html#ixzz0u9nhGXAL


    If you're still not getting a good signal, try an indoor amplified antenna, which you'll find at an electronics store.
    If your signal is weak because you live a long way from the transmitter, install an outside antenna and mount it as high as is practical. If you're primarily interested in getting signals from one station or from a group of stations in one direction, get a directional antenna and point it toward the transmitters. Make sure to Switch from stereo to mono.
  • Step 4 With a receiver or tuner, connect a wire-loop or T-shaped dipole FM antenna to the back of your unit. Move the antenna until you get the cleanest signal. Use a signal-strength meter or display to gauge signal strength if your unit has one.
  • Step 5 Alternatively, upgrade to a third-party passive or powered antenna.
  • Step 6 Install a rotatable roof antenna for the best possible reception. Connect your unit to an existing televisionmag-glass_10x10.gif roof antenna for the next-best alternative.

  • Read more: How to Improve FM Reception | eHow.com http://www.ehow.com/how_5554_improve-fm-reception.html#ixzz0u9oTaz4Y

    If you're using a portable FM radio where the only antenna is the power cord, stretch the cord as straight as possible and experiment with positioning again.





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    many units have a fuse inside the back cover near where the power cable comes in. be careful to replace it with the same size fuse as the problem that blew the fuse might still be there and could potentially cause a fire.

    I have the same unit and i am looking for help because the cd will not run (wont spin the cd), but the door works. also the FM reception sucks.

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    Subwoofers work with radio and not cd player


    You have mistakenly used the power antenna remote wire for the amplifier remote wire. When the FM/AM source is de-selected, the signal drops from that wire so the power antenna will go down.

    Switch the 2 blue wires and you will be problem free.

    Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

    Apr 22, 2009 | Alpine Car Audio & Video

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    or you hooked up the antenna straight to receiver
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    Dual SBX554


    POWR TO BATTERY FOR WHAT?DOES THE SPEAKERS HAVE AN AMPLIFIER? NEW RADIO? SPEAKERS ALONE ARE NOT CONNECTED TO BATTERY ,UNLESS THEY ARE POWERED SPEAKERS,USALLY SUB-WOOFERS HAVE THEIR OWN AMP.iF YOU ARE CONNECTING A AMPLIFIER START WITH A FUSE SAME SIZE AS THE AMP,CONECT 1ST TO THE BATTERYTHE TO THE FUSE RUN A SIFICIANT GAUGE POWER CABLE TO THE AMP.GET THE GOUND FROM A PART OF THE CHASSIS CLOSE TO THE AMP,ALSO SAME SIZE OR LAGER GAUGE WIRE.THEN YOU HAVE TO RUN A REMOTE SWICH WIRE FROM THE BACK OF THE RADIO TO THE AMP.iF RADIO DONT HAVE REMOTE ,CUT INTO THE POWER ANTENNA WIRE .RUIN YOU RCA CABLES TO THE AMP AND WIRE YOU R SPEAKERSMbUT FIRST DISCONNECT YOUR GROUND FROM THE BATERY MOST IMPORTANT.ANY '?'S.WRITE BACK RATING PLEAse.

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