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Protect light stays on - TOA Electronics A912MK2 Amplifier

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I have a Rockford fosgate 501bd why the protect come on?


i say somehow you have damaged the amp, it needs repair or tip. useually output transistor or fets are faulty, if you cut the faulty ones out of circuit the other remaining channels may work

Oct 16, 2014 | Car Audio & Video

1 Answer

Protect light not comeing off


not passing self test. since my crystal ball got broken I have no idea which unit you have and/or what it even is. you are prolly better bringing this one to the shop

Mar 20, 2014 | Audio Players & Recorders

1 Answer

800a4 stays in protect mode


Generally thats a sign of a shorted output device, either a bipolar transistor or mosfet. Also ground faults can trigger a protect light.

Feb 03, 2013 | Rockford Fosgate Punch 800a4 Car Audio...

1 Answer

Red light stays on nad 350 amp


all of the time or only when it's off?
if it comes on when it is off, it is your stand by light. this is normal.
If it is on when the receiver is on, it may indicate an option, or it may be a protect light.
If it is a protect light, check your wiring and ratings.

Feb 06, 2011 | Audio Players & Recorders

1 Answer

I have a ma audio hk-602sx and my protect light wont go off and somthing is clicking inside and as it clicks the protect light blinks.


Disconnect the speakers and then try it again...there may be a shorted speaker or wire if the amp comes out of protect after you disconnect the wires...if the amp stays in protect after you disconnect the wires then there is a problem inside the amp with the circuitry and it will need to get serviced by an electronic tech

Jan 23, 2011 | MA Audio HK602SX Car Audio Amplifier

1 Answer

I have a lightning audio amp a B4.320.4 and Protect Lght stays on


the amp probably got to hot and had a thermal shut down witch will have to be fixed by a professional.

Mar 06, 2010 | Lightning Audio Car Audio & Video

1 Answer

Um the power light will flash then the protl. light will flash its all hooked up right but weird sounds coming out my subs.


Disconnect subs from output of amplifier and then turn on car and radio. Does amp stay on or go into protect? If it stays on then there is something wrong with the subs or how they are wired (series, parallel ) to the box and amp. If it still goes into protect then something internal with amp.

Feb 23, 2010 | Concept Car Audio & Video

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 Audio & Video

1 Answer

Brutus 1600 watt hi fonics amp


i have had the same problem with one of my amps that was given to me by a friend and one of the channels were blown. Blowing a channel can cause the protect light to stay on.

May 08, 2008 | Car Audio & Video

1 Answer

No power


Unit is in protect mode. Most likely cause of protect activating is blown channel (shorted output transistors). I work for a Authorized Denon repair center in Michigan if Shipping to Michigan is economical let me Know kstahl65@att.net

Feb 06, 2008 | Denon AVR-2802

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