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NO SOUND AMPLIFIER COMES ON (BOTTOM TWO LIGHTS) AND IMMEDIATELY GOES TO CLIP INDICATOR (TOP TWO LIGHTS). CHECKED WITH SPEAKERS ON BOTH CHANNELS. ALSO TRIED COUPLING (MONO). CLIP LIGHTS STAY ON. COULDN'T LOCATE A CIRCUIT DIAGRAM. CHECKED INTERNALLY FOR LOOSE CONNECTIONS AND SHORTS,ETC.

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  • Graeme Ross
    Graeme Ross May 11, 2010

    Hi fsteinus



    What make and model do you have there. Sounds like it is going into protection mode.



    regards

    robotek

  • Anonymous Mar 21, 2014

    after many hours of usage, using the same setup, audio system now clips. not the speakers because they do not clip using a different amplifier. what could be wrong with the amp?

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I am also having a similar problem. I am using a classic 1985-87?? reciever. I dont want to give it up however, i blew a fuse after plugging in an input while the unit was turned on. The system light up and that was that. After replacing the required fuse correctly, everything turns back on. No sound output. no indication of sound off the needles either..

Posted on Oct 25, 2008

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The Amp clip light is always ON only the left channel and the same channel is not functioning by giving sound, please help


I looked at a schematic for EP2500 which is same but has a lower buss voltage than the EP4000. Below, the drive signal to the power stage is full wave rectified to illuminate the LED, d-c is presented to the LED if R128 & R138 has an a-c return. There is a line that can push-up the a-c return. It goes off to a connector that is unknown. I suspect the push-up voltage is not there. It could mean anything. I think its coming from the main transformer, Check for blow fuses.
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Also the speaker output is protected with a "Crowbar" circuit. It is simply a Triac device (light dimmer) or two SCRs to prevent d-c from shorted output devices being applied to the speakers. which would cook the speaker coils. This may be activated when amp is turned on. Then there is the possibility of the output power devices - one or more shorted.
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The amp needs to be checked out by a repair technician.

Feb 04, 2016 | Behringer EuroPower EP4000 2Channel...

1 Answer

Clip light will go on then goes off


The problem sounds like a dead short issue and the amp is in protection. Check cabling to make sure there are no crossed wires. You can also check by swapping channel 1 and 2 inputs and outs to see if the amplifier passes signal on the bad channel.Also could be an amplifier channel failure if it does not. Have serviced by an autorized service center.

Sep 08, 2012 | Crown CE2000 2-Channel Amplifier

1 Answer

Before I ask, I know the risks involved in opening a high power amplifier. I know sending it to an authorized repair shop is the best (and most expensive, possibly more so than buying a new amp) option....


Hi,
When you heared or noticed any burnout components,most probably from the regulators/rectifiers/IC's/ voltage limiting dides/ etc,it means you're having a problem on your driver up main outputsection in your circuits ,you have to check steps by step,n most cases,like this HIGH POWER AMPLIFEIRs,its using a high wattage transistor/Mosfet particularly,
After replacing some faulty components,,Please,.kindly .do not connect immediately your expenssive speaker's,if you've 8ohms /50-100W dummyload parallel with your( ohmmeter on AC set), to monitor the ac abrupt dumping factor on the main output,
CAUTION;
When you noticed your amplifier is having a problem like poping sound/motorboating sounds/burned components and smell/trembling with low freq sound and etc,
Do not connect your speaker,specially HIGH POWERED OUTDOOR AMPLIFIERS just to avoid any damage or create fire, and extend some components damage on the circuits,
OPTIONS:
In deep repairing and troubleshooting in any electronic equipments, it needs complete diagnostic tools/schematics/techniques,...experience and observation sometimes is required,
IF YOU DONT HAVE IT,ITS BETTER TO BRING YOUR AMPLIFIER IN A SERVICE SHOP,
My friend,thanks and good luck,.

Jun 02, 2011 | Crown XLS 602 2-Channel Amplifier

1 Answer

My amps stays in the clip mode where as the light on the two channel stays red


http://www.retrevo.com/support/QSC-RMX-4050HD-Amps-manual/id/23107ci658/t/2/

Page 7...

CLIP: red, to the left of each Gain control.

Normal indication: illuminates whenever the amplifier is driven beyond full power. The LED's brightness indicates the amount of distortion. Distortion that causes only brief flashing may not be audible.

During muting, the indicator fully illuminates. This occurs during normal "On-Off" muting.

Abnormal indication:

•Bright red illumination while the amp is being used indicates either thermal muting or a shorted output.

•If the amplifier overheats, the fan will run at full speed, and operation should resume within one minute. Allow the fan to run, and make sure the amplifier ventilation is adequate.

•A shorted or overloaded output circuit will cause excessive Clip flashing and possible overheating.

•If distortion is audible without a Clip indication, the problem is either before or after the amplifier. Check for damaged speakers or overloaded signal source. The amplifier Gain control should be in the upper half of its range to prevent input overload.

Jan 29, 2011 | QSC RMX 4050HD 2Channel Amplifier

1 Answer

CROWN CE1000- slips into fault immediately after connection


if ur output power amp is defective u will have that problem - meaning the moment u connect load across it it will go into circuit protection to limit/stop excessive output current. make sure the speaker terminals are connected to +/- output terminals. in bridge mode use only channel 1 and that too with 4 ohms speaker only otherwise amp will clip. considering all connections are okay if it still clips when speaker is connected, u have a faulty power amp section. this the way ur amp is designed

Apr 05, 2010 | Crown CE1000 2-Channel Amplifier

1 Answer

My yahama P3500s Amplifier left channel dead and clipping light stays on both speakers works ok in right channel.


Hi, make sure everything is disconnected, is the clip light still on?
if so then I'm afraid it sounds like the output devices for one channel may have blown, ( not certain, without looking at it i'm afraid ).

If you need more help, then please ask.

Regards - Anthony

Feb 06, 2010 | Yamaha P3500S Amplifier

1 Answer

Speakercraft DBB12100 Amplifier, Circuit problem


Sounds like its a problem with over heating. open unit clean out all dust and dust bunnies wich compressed air. check that all fans are opperating. (fans on 6x100 amp units or thermal controled). If amp goes into protection prior to fans turning, there is your answer. the @ power supplies will have a green light on the output side. if the light in on power supply is good. or you can check that the output voltage is at 48Vdc on both units.

Sep 18, 2009 | SpeakerCraft DBB12100 12-Channel Amplifier

2 Answers

Adcom GFA 5500 right channel emits horrible sound. Broken highs and no bass. Is is repairable by a semi amatuer?


Adcom makes a great amplifer! Usually broken highs and no bass means blown speaker. Try hooking it up to a completely different input source. Try different speakers also. If problem persists, check the fuse. Most will have a fuse on the back you can screw out. Some have two fuses (one for each channel) If this doesn't fix the problem it could be expensive to fix. Also, does this model ave the thermal protection light and if so, does it come on at all?

Jun 22, 2009 | Adcom GFA-5500 2-Channel Amplifier

2 Answers

CE2000


clipping as indicated by its light? if so then you have overdriven your output. i dont know about Crown their protection but normally such indication you have problem with either your load speakers maybe shorted but still audible or maybe your input stage overdriven also.

redrivera

Mar 17, 2008 | Crown CE2000 2-Channel Amplifier

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