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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

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

AMp does not display any LED read out


Amps have a part inside that is made to keep the channels equal. The problem is that when there is nothing hooked up to the second channel, then this goes bad and goes into protect. It is really hard on an amp to use just one channel.

Sep 26, 2009 | Bob Mackie Mackie M-1400i Power 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

1 Answer

QSC 2450 Power amplifier


i have a pyle pro 1000 watt max 2 channel mono and 2 channel stereo and when i get that thing loud the little red light cums on basically what i mean is that the amp on channel one is cooked i myself i wouldn't even use it y cause more damage

Apr 03, 2008 | QSC RMX-2450 Car Audio Amplifier

1 Answer

Jensen LXA400


I have this same amplifier. I have noticed several ways it will "not work" during my ownership of it. I have it connected to a seperate battery to save my alternator, battery, etc as it is a power hungry beast for how low the output wattage is. Test the input voltage to see if you have enough, one way to see this is to check the "jensen" emblem that lights up. If you dont have enough power it will appear dim and only the right side lights up. Also the amplifier will not work if your speakers are "blown" even a little bit. Ive taken speakers that wont work on my lxa400 and connected them to a higher power amp and they will work (although they will sound horrible) If youre smart you will keep the gain under 3/4 on this amp, I see some people have found out the hard way that full gain fries the amplifier circuitry. Not an expert on electronics but it smells somewhat like melting glue or plastic. Ive noticed a lot of people have problems with the RCA jacks as well. There are 8 jacks, in two clusters. The first one is A+B and the second is C+D. Note: You do not NEED Y connectors on this amp! Connect your output rcas from the deck to top left and bottom left jacks of the left cluster. This will give you left and right (a+b) output from the first set of speaker outs. Then connect an rca patch cord from the top right and bottom right jacks of the first cluster and connect the other end to the top left and bottom left of the second cluster. This will give you output from the second set of speaker outs. Remember that this is in 4 channel mode. I dont remember the set ups for 3 channel but two channel I believe is the left deck rca goes to top left of the first cluster and the right deck rca goes to the top left of the second cluster. Then you just wire the speaker outs according to the picture on the amplifier. something like this: _________________________ |(+) - (-) +| ~~~~~~~~~~~~~~~~~~~~~~~~~ Speaker + goes to (+) and speaker - goes to (-) Also addressing another issue if you want to increase the wattage to your speakers you just use a lower resistance speaker (2ohm instead of 4) I would not recommend using anything over 4 ohms. As for the high level inputs, I dont recommend using them unless you have the plugs that go with them, its a lot easier to wire your deck rears to a line converter (changes straight speaker wire to RCA jacks) or to just buy a new deck with RCA outs. Last item, common knowledge: 400 watts does NOT mean 400 watts!!! This amplifier puts out very little actual wattage (50 or 83 per channel depending on the load) Hope all this helps someone out there.. Anyone who knows the 3 channel setups I would appreciate it.

Apr 12, 2007 | Jensen LXA400 Car Audio Amplifier

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