Question about JVC TH-C4 System

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QUIT WORKING Hello, I was listening to Metallica volume 60 cranked and it suddenly stopped. This has happened many times before but it alway's reset itself by turning off and then on again. Not this time. I took it apart found three fuses all of which were good. How can I check with a multi-meter? Would it be the power supply? If I can't find a solution here, I would be willing to pay for directions for troubleshooting myself if anyone can direct me to a site that does that sort of thing. Perhaps a scope will be needed which I don't have.

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I have repaired many of these units in the past but it is not a easy unit to walk somebody thru unless they are a experienced Technician. (Not recommended for Amateur in Electronics). Does sub power up (green led) then shut off right away?? when Dvd is turned from off to On?? Do you hear any relays clicking when dvd is turned from off to on??. If you do not hear relays it is possible transformers internal non resetable thermal fuse may have opened.

Posted on Jan 17, 2008

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It'll work listening to the radio just fine for about 5 minutes, then the sound goes away.

If you are running at high volume for even a short period of time, the overload signal to the microprocessor(computer within your unit) will cause the unit to shut down. If you are running it that loud, try turning the level to 1/3 of your normal listening mode. If it runs, try to keep the volume with reason.

Aug 04, 2015 | Home Theater Systems

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I was listening to in on full volume a few weeks ago (as I wanted to be able to hear it from the shower!) and it suddenly started making popping noises.

try using other speakers....the suspect is the speakers, maybe the cones are worn out....due to vibrations caused bu full volume

Oct 18, 2014 | Nakamichi Home Theater Systems

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Volume turns down by itself until it says VOLMIN

I have a Samsung home theater system model HT-D6730W. I have had some issues with the volume turning itself down till it says volmin. I've seen that I'm not the only one with this issue!!!! I have tried all the suggestions that were posted. Doing a hard reset, changing settings, I bought a cooling pad for laptops Hopi g those would fix it. I called Samsung support Which was a joke!!! I took the putter cover off and cleaned all the dust from the unit, removed batteries from remote, removed all cable connection on the back of the unit other than the HDMI cable going to the tv. Having done all that the unit was still turning its self down. I'm a bit of a tinker and so while the cover was off of the unit, displaying all the delicate stuff inside, I turned on the home theater system and played a movie set the volume to a good listening sound. When it started to turn it self down I remove the wide wire ribbon from the main circuit board going to the touch panel on the front of the unit. Voila!!! Sound quit going down!!!! I unplugged unit and removed front touch panel and cleaned all dust from the inside of it. Put it all back together. Tested. Still doing it. Removed the touch panel again and this time I disconnected the small wire ribbon for the volume touch buttons. Reassembled and tested. NO MORE ISSUES!!! Everything on the front still works other than the volume buttons. You can still change the volume using the remote!!!! I hope this finds everybody that is having this issue with there unit.

Feb 14, 2014 | Samsung Home Theater Systems

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RT2770 cuts out above a volume setting of 30.

Bass and other settings may be set too high and are overdriving the unit.

If all else fails try the old unplug it for a while and then plug back to see if that helps.

What if anything else is hooked up at the same time to this system?

Jun 14, 2012 | RCA RT2770 Theater System

1 Answer

Hello, I have an RT 2870 RCA surround sound system. When I turn it on all I hear is static and its not until I crank the volume up to around 25-30 before I can hear the audio. How would I fix this problem?


Turn the volume control to something medium.

The errant switch, control or condition may change and you will suddenly release the amp's full power and possibly destroying your speakers. If a signal isn't audible at 1/2 volume it's probably not there.

Carefully examine the front panel for clues like a misplaced Mute or Tape Monitor control or Multichannel Analog Input selected.

There is a good chance that a common control (volume pot??) may have developed a high-resistance or 'dead' spot through defect or idleness and is causing your symptom. Turn the POWER OFF and operate every control throughout its range a number of times, especially rarely-used ones like Tape Monitors and the Mute control.

Turn the volume to something reasonable and see if that helped.

May 24, 2011 | Home Theater Systems

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Digial box was working great till two weeks ago. only five months old, but all of a sudden it changes stations on its own. This happens a couple of times a night, and sometimed changes up and sometimes...

I have had this happen to me, also, with my Apex Digital DT-250 but it usually was a result of me using a separate remote to change the volume on my analog TV. I realize this is not the same system setup that you have but it may offer some idea.

Sep 14, 2010 | Apex Digital HT-150 System

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Unit keeps switching off when volume is loud

this will happen in case of sound volume control ON
if it is off u will not get

with regards

Apr 10, 2009 | Home Theater Systems

1 Answer

My system shot down during a movie

The reason why your receiver is going in protect is because there is a short circuit happening. This would either be on your speaker wires, speakers or receiver itself. What you want to do to check would be:
1. Unhook all sources and speakers from your receiver.
2. Turn on your receiver and crank up the volume to maximum, if your receiver does not shutdown or go on protect then the receiver is OK. If it does shutdown and go on protect then its an internal problem on the receiver and you would need to send that over to an authorized service center.
3. Hook up a source and 1 speaker. Play something from the source or the fm tuner, Crank Up the volume to about 46 or 47 volume. If the receiver does not shutdown, its good.
4. Hook up a second speaker and repeat the process until you encounter the pop and shut down
if for example you encounter the pop on the 4th speaker, try changing the speaker wires.
5. If the receiver still shuts down then it would be a short on the speaker itself and it would need to go to an authorized service center.

Feb 23, 2009 | Onkyo HT-SR800 System

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Radio tuner stopped working

replace Bad Circuit Dsp Pcb the rca part number is #265973

Jan 13, 2009 | RCA RTD258 System

1 Answer

Bose 3.2.1 Volume is too low

ok on your receiver you have different settings this is not easiest to say and think and type at the same time so here goes

your reciever has different settings example sterio, mono expanded sound game sound etc.

i believe that if in wrong setting or the mpx is not on then you will get a low output of sound
also quite possible the songs were recorded at a lower output sound volume

i hope this made some sence

Jun 08, 2008 | Bose 3·2·1 II System

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