Question about Sony STR-DE595 5-Channel Amplifier

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No sound because of volume overload

Power still coming into amp but no sound, GUI not lighting up .It hums but amplifiers sound dead.

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Technics stereo Integrated Amplifier SU-G75 powers up few seconds then overload light appears and a clickng noise coming out of metal boxq with tag FP-3 M V RTP1P5C015 on it iis it supposed nto make c


If the receiver works at low volume, but goes into OVERLOAD and shuts down at higher volume, it means you are player the unit too long and too loud. Try yo keep the volume down to a reasonable volume.

Nov 15, 2014 | Audio Players & Recorders

1 Answer

Protection light comes on and volume returns to zero. I am using a Azur 540A. This issue occurs when I ride the volume above a certain point, which is NOT any higher than i've been running it for years....


Protection circuits respond to overloads. Unless the protection circuit is faulty there is probably something wrong with the power amp parts located on the heat sink.
It would be a good idea to have the top cover off (on power) and listen for that noise to try and pin it down what is making it.

Aug 24, 2013 | Cambridge Audio Azur 540A Amplifier

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

Roland KC-500 has power but no sound.


You need to determine if the power is getting to the audio amp section. For instance with the volume full up is it humming etc?
As a 'rule' it's unlikely that both left and right channels will fail at the same time (unless you have done something silly with the amp) you are looking for something that is common to both channels. Which is why the power section is first suspect. The exception to the rule (above) is where amps use say an IC power amp for both channels. You will find this IC on the big heat sink. Check whatever is on that anyway for damage or burning.
The only other area could be the pre-amp part. Again this could be a single IC controling both channels, so it's failure could cause a loss of sound. By the way if you can hear music/sound coming through when you put it up to full volume the pre-amp will be generaly good.

Nov 23, 2009 | Roland MMP-2 2-Channel Amplifier

1 Answer

I have a MPA 201 2 channel amplifier that just stopped putting out power, power light is still on, any suggestions?


You need to determine if the power is getting to the audio amp section. For instance with the volume full up is it humming etc?
As a 'rule' it's unlikely that both left and right channels will fail at the same time (unless you have done something silly with the amp) you are looking for something that is common to both channels. Which is why the power section is first suspect. The exception to the rule (above) is where amps use say an IC power amp for both channels. You will find this IC on the big heat sink. Check whatever is on that anyway for damage or burning.
The only other area could be the pre-amp part. Again this could be a single IC controling both channels, so it's failure could cause a loss of sound. By the way if you can hear music/sound coming through when you put it up to full volume the pre-amp will be generaly good.

Nov 16, 2009 | Jamo MPA201 2-Channel Amplifier

2 Answers

Crate gtx 65 guitar amp mains hum


I had the same problem on my VTX65. I noticed it would oscillate with different effects so I removed the effects module. Problem solved. Now it's dead quiet. I use a Digitech RP500 so removing the effects module was a non issue.

May 19, 2009 | Lexicon LX-7 7-Channel Amplifier

1 Answer

Behringer EP2500 trips immediately when turned on


Power supply section is overloading probably because of audio power amp problem.
Paul

Mar 31, 2009 | Behringer EUROPOWER EP2500 Amplifier

1 Answer

A peavey special 130 guitar amp with excessive hum


I used to have one of these years ago!

What do you mean when you say 'switch to the off position'? Do you mean it hums when switched off?

Because the sound does not fully follow volume, it is likely a bad connection or power filter capacitor is not working.

Either way, it means a trip to a repair shop. There is nothing in there you can fix unless you are a repairman. Your local music shop should be able to coordinate a repair.

If this amplifier is like the 1983 version I had, its built like a tank and the fix should be easy.

Hope this helps!

Mar 19, 2009 | Audio Players & Recorders

1 Answer

P4500 yamaha amp


first check your input cable-disconnect it and check if the problem finished---you will have a problem in input(cable or device)-start with another cable then your input device.
if the problem still check your out put cables(speakers cables)for short circuit or touch the bare wire with amplifier body.-try to clean volume controls with spray contact cleaner---confirm good connection in amplifier rear and in speakers rear.

Aug 25, 2008 | Yamaha P4500 Power Amplifier 2-Channel

1 Answer

Amplifier sound difficulties


When I turn on my marshall amplifier its makes this unusual, anoying sound. it sounds like a small motor or a fan going. the sound of the amp is good but its just makes this motor sound when I switch it on. can you help me find the problem.

Mar 25, 2008 | Prime 40 Watt 2 Channel Lead Electric...

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