Question about JVC RX-6040 Receiver

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JVC Receiver RX-6040B turns it self off after 10 seconds

The other night my receiver all of sudden turned it self off.  I powered the receiver back on but after 10 seconds it turned it self off.  I unplugged all speakers and wires from back of receiver and tried powering back up but got same results.  Any ideas?

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  • JVC Master
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The amplifier is seeing a short,or the internal components like one of the output ic are causing dc to show at the speaker terminals.the speaker protect is causing it to shut down.

Posted on May 14, 2009

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Posted on Jan 02, 2017

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There was probaly a power surge over night,End it fried the reciever on you.

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Receiver turns off as soon as it is turned on


• check for shorted power MOSFET transistor s on the main amplifier

• have them remove in pair, if it powers up

you have succeeded finding the cause, but

• recheck again for possible additional components.


these may take some time,

and i hope youll make it.

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I have a Jvc Rx-6040b Receiver this morning i tuned it on i got no display 3or 4 seconds later it shuts off so i unplug it for awhile.Then later today i tried it again and the same thing happened.. anyone...


Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

May 08, 2011 | JVC RX-6040 Receiver

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Around 4 second after power up the unit shuts down..


my jvc rx-8010v turns on and after 4 seconds it shuts down.

Jan 05, 2011 | JVC RX-8010V Receiver

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JVC RX-6042S shuts down after 5 seconds


It will be one of the transistors that regulate the lower volatges (5V, 12V...)
I ffixed mine. the heatsinking on those transistors is pathetic, and its no wonder they dont last.
Mine was the 5V circuit, which also supplies the DSP board. so if you are getting a DSP NG, that could be that as well.
Check Q1434 and Q1404. if one is faulty, it drags the other one down with it.
Good luck.

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Yamaha RX-V995 receiver turns on & then powers off 2 seconds late


I suggest you run self diag.  press [FM/AM] key + [Input mode] key and press the [power/standby] switch.

ps prt = power supply problem
dc prt = shorted output or leakly cap in channel
tmp prt means to hot on heatsink

you'll likely have to measure the resistances of the output FETs to find a short, 

Jan 02, 2009 | Yamaha RX-V995 Receiver

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this is a self-powered sub, correct?

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Reciever Shutting Down


I replaced R916 with a 10 ohm wire wound resister and that fixed the problem on the unit I have. That resister is in serise with R 915 so they should be close in value. Both were marked 8 ohms but tested about 11 ohms on R915 and the bad one tested very high (over 1 meg) so I replaced it. When I first put it back together it didn't work but I noticed that the ground screw at EP901 was not retighted so be sure that all ground screws are tight and all conections are redone before testing with the power cord.

Good Luck,

Thomas

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