Question about Power Acoustik TS1920-2 Car Audio Amplifier

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Protect light stays on

I was driving yesterday and the amp overheated, so i disconnected it and pulled it out of the trunk to let it cool overnight. I went to hook it up again this morning, and it only powers on for about half a second when the stereo is turned on and then the light comes on again. I pulled off the back cover and it didn't seem as though anything was fried internally, checked the wiring from the battery, checked all the fuses, just about everything i can think of and nothing. What is wrong????

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Re: protect light stays on

Se if power suplie is 12/14V if not repair charger ,try disconecting all of outputs and it heats up (mosfet's)

Posted on May 06, 2007

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2 Answers

JBL BP600.1 protection

Disconnect all speaker connections and rca cables. Leave power, ground and remote wires intact. Try turning on again. If you still have a protection light your amp is faulty. Hopefully you have warranty. Using an ohm meter to the sub will confirm whether its bad or not. Invest in a cheap test set of 6.5" speakers.
.A thumbs up would be greatly appreciated if this answer is helpful to you.

Jun 02, 2013 | JBL BP600.1 Car Audio Amplifier

2 Answers

Protect Light On Amp Being Weird

Could try switching right and left subs. If the problem moves to the other side pull the wiring and redo.
Then if the wiring is ok check the sub.

May 15, 2013 | Jensen JPA600D - 600 Watts Digital Mono...

2 Answers

Hello, i have a nitro bmw 486 amp. i use it to power my 2 subwoofers in my trunk. its a very good amp and sure does its job, but randomly the light will turn red, which means protect, and my subs will shut...

Disconnect all speaker connections and rca cables. Leave power, ground and remote wires intact. Try turning on again. If you still have a protection light your amp is faulty. Hopefully you have warranty D .A thumbs up would be greatly appreciated if this answer is helpful to you. nitro-lv2kkrmxrai4iihdvw4m3np2-1-0_0.jpg

Jul 31, 2010 | Nitro BMW-486 Car Audio Amplifier

1 Answer

Red protection light stays on all time....

try disconnecting one at a time each speaker till the red turns to green. One of your speakers may be bad. Amp is just telling you that its clipping and overheating due to the change in ohms of a shorted or bad speaker. Its also possible the amp is on its last leg due to heat. Heat breaks down electronics part and eventually get worse.

Apr 05, 2010 | Car Amplifiers

1 Answer

Prosound amp is running fine but the protect light is still on

Hello martinpresto,

The most likely causes are overheating and operating the amp into too low of an impedance. Or the amp itself could be failing. If the protect comes on immediately after the amp has cooled overnight, it's probably not overheating. Too low of an impedance can be caused by a shorted voice coil.

You can check the load with a multimeter. Disconnect the speaker wires and measure their resistance with a multimeter. Since the published impedance is nominal and varies with frequency, you'll be reading the DC resistance. Some manufacturers include the figure in their "R subscript e" specification. Usually, it's a little lower than the impedance. So a 4 ohm load may read 3.2 ohms. If the DC resistance checks OK, it's probably the amp itself.

Hope this helps.

Sep 19, 2009 | Lanzar Vibe 218 Car Audio Amplifier

1 Answer

Xplod amp will not get off of power protection mode

if the protect light stays on the amp is blown or has flawed components and is only repairable by expirenced sony tech

May 18, 2009 | Sony Xplod XM-554ZR Car Audio Amplifier

2 Answers

Lanzar amp 1000 watt stays on protect mode

Hello snow11879,

I haven't been able to locate any support information online about your product, other than the email contact for support questions:

If the amp stays in protect mode all of the time, I would suspect a short in the speaker wiring or speaker(s) voice coil(s), or perhaps a faulty ground. If it plays for a short period of time and then goes into protect mode, it is most likely overheating. First check all of the wiring. Test your speakers on a known good amp and make sure there are no places in your wiring where the insulation may have been damaged, causing an intermittent problem.

Many owners have reported that this particular amp has a tendency to overheat. Also, when run in bridged mode, the speaker impedance needs to be at least 4 ohms. It will overheat if the impedance is below 4 ohms.

Hope this helps.

Apr 18, 2009 | Lanzar VIBE266 Car Audio Amplifier

1 Answer

Sony xplod amp(XM-1652Z ) power/protect light

if your amp is overheating your sub is needing to much power that the amp doesnt have.
if its cutting out and the red light comes on you need to check the wiring. nothing not even the tinyest speaker wires can be touching.
proper wiring would be your best bet.
but i would upgrade amps.
cheap bang isnt reliable.

Apr 06, 2009 | Sony Xplod XM-1652Z Car Audio Amplifier

2 Answers

Protect led light

It appears that the amp is going into protect mode. To eliminate external causes, read through the following page. Let me know if you have any other questions.

Amp in Protect Mode - Troubleshooting

Oct 10, 2008 | Car Amplifiers

1 Answer


The thermal protection would have reset when the amp cooled down. When cool, if it still goes into protection when it powers up, there are likely blown output transistors. To be sure it's not a wiring problem, disconnect the speaker wires 'from the terminal block of the amp' and disconnect the RCA cables from it. If it still goes into protection, the output transistors are almost certainly shorted.

Sep 09, 2007 | American Pro VS-2043 Car Audio Amplifier

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