Question about Kole audio Q2-1920 Car Audio Amplifier

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Problems My amp does power up but doesn't produce any sound and now the protection light comes on. I want it fixed , What can I do ? I will be greatful for any help

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Un hook your speakers and see if you protection light stiil comes on if it does not its just your subs

Posted on Jan 16, 2008

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Chenge and replace the safe of the amp

Posted on May 23, 2007

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Posted on Jan 02, 2017

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300W Pyramid PA305 protection light


What is the speaker load in Ohms that you are running? Or what exactly is hooked up to it? are you bridging it? The protection light will come on if the load is too much for the amp to handel. If the load (in Ohms) is less than the rated load that it can run, it will stop the output to keep the amp from self destructing. The amp will sense that the demand for power will be too high for the amps circuitry which will either make the amp get so hot that it will burn up the copper on the board or more likely burn up the power mosfetts that power the speakers. If the Ohms are within range then it will allow power to flow through the circuit until the rails that the mosfetts are bound to until they get so hot that it will go into thermal protection. So if your amp has both thermal and overload protection lights and the overload is light then the load is probably too much for the amp. if it's bridged in mono the you can only have 1 speaker setup hooked up it if it's a 2 channel amp. a 4 channel amp bridged in mono for both front and rear channels will be able to have 2 speakers rated a 4 ohms each hooked up to the amp 1 set per bridged output or channel.
Try it running in stereo with only 1 speaker per channel and see if it will produce sound. If not then you have an amp that has internal problems and will need to be serviced. Check your warranty to see if you are covered.

Apr 02, 2013 | Pyramid PA305 150 Watt PA Amplifier Car...

1 Answer

The protection light is lit as stays lit and i have no sound coming out


if the protection light is on its an hardware failure
the protection unit will not let you power on the Amp
need to take to service
if you want to fix the amp let me know
ecrdn@yahoo.com

Jack

Oct 18, 2010 | TOA Electronics P-924MK2 Amplifier

1 Answer

Amp cycles on and off


Hello it sounds like the amp is going in & out of protection normally the protect light will pulse at the same time but is not always the case if you can get hold of a voltmeter set it to the 20v range & check to see if there is 12v present between the RCA (Phono socket) input & shield, if so then the switch mode power supply transformer is faulty. It could also be a number of problems elsewhere as well so really needs to be inspected by an experienced engineer.

Nov 13, 2009 | Car Audio & Video

1 Answer

I have an older red sony xplod 500w 4ch amp. the power/protection light is glowing red. what does that mean and how do i fix it? I have no sound.


The protection light comes on if the amp overheats or if the speaker outputs are shorted.

Turn everything off and check all of your speaker wires for shorts. When you locate and repair the short, the protection light should go out and your amp will work normally again.

Hope this helps!

Mar 26, 2009 | Car Audio & Video

2 Answers

Kicker dx 350 amp


Remove amp from vehicle, connect Directly to Battery, then short REM line to Ground, see if amp comes out of "protect" If it does, you have either a short or a bad connection on your power wires between amp and battery, If testing amp directly to battery and it doesnt come out of protect, it meens you fried the amp and likely your problem is wiring between the amp and the speakers, or even the speakers themselves (shorted) .. If you Drive your speakers hard enough they can overheat and short out after a short blast... anywhere from 10seconds to 45 mins.. depends on many variables.

Jan 25, 2009 | Kicker DX350 Car Audio Amplifier

1 Answer

Protection light


double check the blue stereo input wire to amp is this a new amp if not speaker channels in amp might be blown

Nov 08, 2008 | Kicker KX120.2 Car Audio Amplifier

2 Answers

I need repair help. no schematics


Blown Mosfets
A thumbs up would be greatly appreciated if this answer is helpful to you. need-repair-help-no-schematics-zb4bomd1rt4qms0dqd12kkt2-5-0.jpg

Nov 08, 2008 | Lanzar VIBE266 Car Audio Amplifier

1 Answer

Protection Light coming on with loud volume and power


It's most likely that the over-current protection is tripping at high power. At lower voltage, the amplifier can't produce as much output power and therefore can't produce enough current to trip the protection circuit.

You need to check your speakers to make sure that they are not shorted. With an ohm meter, the resistance across the voice coil shouldn't read any less than ~90% of the rated impedance.

If the speakers and the wiring are OK, the amp may have an internal fault causing the amp to go into protection.

Let me know if you have any other questions.

Aug 13, 2008 | Volfenhag ZX-8200 Car Audio Amplifier

1 Answer

California 3600 mosfet discrete 3 ch amplifier 600 watts does not work


It sounds like it's going into protect. To be sure it's not the wiring, disconnect all speaker wires from it. If the light still goes out, check the DC voltage on the B+ and remote terminals. Place the black meter lead on the ground terminal of the amplifier. If the voltage remains above 11 volts as the amp tries to power up, the output transistors are almost certainly shorted causing the amp to go into protect.

Nov 25, 2007 | Profile 600MSX Car Audio Amplifier

1 Answer

Green LED comes on then fades out


This is common when the output transistors have failed. The amp powers up and the amp senses a problem and goes into protection mode. Generally, there is a protection LED but not all amps have them. To be sure that the problem is not installation related, check the DC voltage across B+ and ground when the amp tries to power up. If the voltage remains above 11 volts, the problem is almost certainly due to a failed component in the amplifier. Disconnect the signal lines and all speakers (disconnect the wires from the amp terminals) and try to power it up. If it powers up, you could have a defective speaker or defective wiring. If the amp still fails to power up, the amp should be checked by a qualified tech.

Sep 10, 2007 | Crossfire VR402 Car Audio Amplifier

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