Question about Yamaha RX-V557 Receiver

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Speaker protection fault on rx-v557

When the unit is switched on the display comes up as normal, after speaker connection delay the unit switches off.Sometimes you can hear the speaker relay click, other times there is no click, the unit just turns off. Have disconnected all cablesw from rear of unit and result is the same. The fault has progressed from just occurring a couple of times then unit would work, but now the fault is continuous. When the unit did connect to the speakers it worked fine. Only once did it turn off after during use after an hour or so. The unit first started to play up within warranty, but was intermitent, the fault only became permanent after warranty expiered. hope someone may have a solution to this problem

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Hello, you must first tested with a voltmeter in DC entrance if you have a DC voltage on all the terminal outlet speaker, normally you must obtain 0Vdc+/-50mV on each out speaker with control volume to minimum, you can stay or remove the speakers during this test.
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Posted on Oct 14, 2008

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I have a Yamaha rx-v367. The HDMI plays video from my blue Ray but no sound. Tuner, no sound. IPod, no sound. Phone was hooked up in multiple inputs. No sound. I'm stuck here. Please help.


It sounds like the Yam can switch video sources but the audio amplifier section is dead. Although I'm not familiar with this unit, simple logic tells me that unless it's a mulit-channel and/or surround sound" setting, the audio section of your Yamaha has failed. If the Yam has speaker protection mode (5-10 sec. delay when 1st turned on) it's possible that a defective speaker (or speaker wire) could be causing the protection circuit to NOT connect amp-to-speakers. Disconnect one speaker at a time (at rear connection on Yamaha) to see if audio returns.

Mar 26, 2015 | Yamaha Audio Players & Recorders

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How do I fix my audio/video receiver that has no sound coming out of it?


If your unit has a speaker protection mode (5-8 second delay when 1st turned on) defective speakers and/or speaker wiring may be causing the protection circuit to do its job...protect the speakers. Disconnect all speakers and test HK in all modes (tuner, CD, DVD, etc.) using headphones. If you still cannot hear audio then it's time for a shop repair. Although I recommend factory authorized service whenever possible, a "local" shop that is certified by other well-known brands may be an option. If Yamaha, Onkyo or Luxman certified your local repair shop then it's a sure bet that they can properly repair HK's no longer under warranty.

Mar 22, 2015 | Harman Kardon AVR 340 Receiver

1 Answer

Does not switch on


check ur speaker wires, try disconnect all wires from back of unit and then try to turn on unit .
if it stays on whit no wires attached than u have short connection at speaker wires .
if doesn`t come on then try to fasten screws at back of the unit ,
may sound like BS but if amp board don`t have good ground connection it can go in protection mode

Jan 18, 2013 | Yamaha RX-595 Receiver

1 Answer

My yamaha_rx-v457 is automatically switching off when i turn on


check ur speaker wires, try disconnect all wires from back of unit and then try to turn on unit .
if it stays on whit no wires attached than u have short connection at speaker wires .
if doesn`t come on then try to fasten screws at back of the unit ,
may sound like BS but if amp board don`t have good ground connection it can go in protection mode happened to me on RX-V592

Dec 21, 2012 | Yamaha RX-V457 Receiver

1 Answer

NAD M3 power light turns red immediately and PROTECT message displays. Amp keeps functioning but volume control doesn't work up or down.


Hello
Check the connection to speaker with this amp, for any short or any other fault. disconnect the outputs, ie, speakers from the amp, and switch it On, and see the protect display comes or not. If it comes, the fault is internal and the set need service.
Your M3 dual Mono integrated amp, is of high output power and its outputs are protected against any overload or short circuit. If the system detect any among this condition specified above, it will show protect mode display.
Never load this amp, as protection display is there, as it may damage the speaker or its internal power amplifier section circuits, may cause more money to get it repaired. OK.

Jan 23, 2012 | NAD M3 Master Series Integrated...

1 Answer

I have a kenwood Rx-28 Sterio cassette Radio when you switch on the Power Switch error "Protected" comes on


It is not so easy to probe into to find a protection fault condition. The fault can be your output drivers- the mosfets fitted for both the channels,or a short in any of the primary circuits. Use a meter after disconnecting to check for short in the drivers. Disconnect the positive and negative voltages to the output and see if the protect changes.
Elimination of the circuits will determine the fault. If so replace the outputs. If not there can be issues in the mother board, maybe the protect circuit by itself is shutting off due to a faulty bias , maybe a leak in any voltage/current sensing circuit.Also disconnect the speakers and test, if the protect is off then check for short on the speakers.

May 02, 2011 | Audio Players & Recorders

1 Answer

The unit keeps turning off with error code fp coming up then turning off again. the unit is a yamaha av reciever rx-v540


Let's just treat this as self-protection:

Make sure all speaker connections are tight.

Make sure the Impedance Selector switch it set fully in one of its two positions.

Generally speaking, an amp protects itself from heat, shorts and overloads.


Overloads can be from excessive periods of high output 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 hands-on tech.

Jan 28, 2011 | Yamaha RX-V540 Receiver

1 Answer

After turning ON the power/standby switch, the unit(receiver) display comes ON (green light) then after approx.4-5 seconds the display goes OFF and the unit defaults back to the standby mode (red light). I...


Is the red light flashing at first?
The unit may be going into protect mode. Lets hope it has done the job and the receiver has protected itself from failure.
Protect mode can result from speaker wires touching each other or the Amps2_bing.gif metal case. Check that first.
It can also be caused by unstable ohm loads if too many speakers2_bing.gif are connected to any of the outputs especially zone 2.
If you can remove all speaker wires and turn the unit back on. If it stays on, turn the volume down on the main zone and zone 2 if connected. Then reconnect speaker wires.

Nov 16, 2009 | Denon AVR-485 Receiver

1 Answer

No sound coming out of speakers something is wrong with the receiver


check if it goes to protection mode on power on. see to it that speaker selector switch is set.

Is your speakers connected properly?

Is your music source ok?

Do you hear a click after you switch on the power? the click indicates that the time-on delay transfers the amps output to the speakers which prevents thumps going out to the speakers.

Once it goes to protection mode you need to have it serviced. This is due to a fault in one of the amps and that it protect the speakers from further damage.

Aug 17, 2009 | Onkyo TX-SR502 Receiver

1 Answer

Help


Hi,

Take every single cable out of the unit, now power on the unit.

If the power protection still shows then there is an internal fault, usually a short or a component defect.

If it powers on ok, switch off and insert 1 speaker at a time and power on the unit until the protection mode comes on again, the last speaker you have put in has overloaded it for some reason, also as you are trying each speaker use the volume and bass controls to see if there is an internal overload.

Thats as much as I can offer you until you narrow the fault down to the unit or one of the speakers.

Cheers

May 13, 2008 | Samsung HT-X40 System

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