Question about Car Audio & Video

1 Answer

Boss GT780 4 Channel 1000 watt mosfet amp protect light

Protect light is on and it don't work. Was working fine then it just stopped working. When I checked the amp the protect light was on. What should I check???

Thank you

Posted by on

  • jackajames Jun 18, 2009

    Checked the fuses, cleaned the ground contacts. Still the same.

×

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 11 Answers

Fuses , ground wire , and battery fuse

Posted on Jun 18, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Trick to reset pb1217x when protect light comes on?


if the amp is shutting down and the protect light is coming on you just have to let it cool down because it is getting to hot, sounds like you are pulling to many OHMS for the amp. if you are running your speakers bridged you can try running them unbridged (parallel) and that will drop the OHMS letting it run cooler. or you might have to try a different speaker/amp combination speakers might be to many ohms for the amp.

Jun 23, 2014 | Pyramid PB1000 MOSFET Bridgeable Amplifier...

1 Answer

My amplifier boss 4800 watts its stuck in protect mode but the green light will continuously flash


you could either have a leaking mosfet or the circuit borad needs cleaning.. it has some corrosion on it

Jun 13, 2013 | Car Audio & Video

1 Answer

Amp on but no sound


Double check all of your fuses and make sure they are the corrects AMP. Other than that it sounds like the speaker wires came loose somewhere along the line. check on the subs and behind the deck. hope this helps

Apr 22, 2013 | Pyle PLA2678 POWER SERIES BRIDGED MOSFET...

2 Answers

I had my boss 2400 watt 2 channel amp hooked up in my car. I had one sub on each channel and one of my subs blew. I unhooked the positive speaker wire on the blown sub, everything was fine. Driving down...


If your amp started smoking, probably not. Due to your description, did the other sub really blow? I would hook it up to another amp to test it. It may have been a channel in your amp. As for repairing the amp, the parts and labor to repair will probably cost you more that to just replace the amp.

Sep 06, 2011 | Boss Car Audio & Video

2 Answers

How do I fix the problem so they work again.?


A 1000 WATT AMP HAS PROBABLY GONE INTO PROTECTION MODE BECAUSE YOU ARE TRYING TO RUN 1600 WATT SUBS COMBINED

Jun 08, 2009 | Car Audio & Video

1 Answer

Amp is in protect mode, green light is on.


If the amp is going into protect, it likely has shorted output transistors. To eliminate other possible causes, read through the following page.

Amp in protect mode - troubleshooting

Let me know if you have any other questions.

Nov 29, 2008 | Phase Linear UPA424CS Car Audio Amplifier

2 Answers

600w legacy amp


9 times out of 10 if your amplifire is in protect mode and evrything externaly, like speakers, fuse, voltage, etc. checks out fine then
either you have shorted out output transistors or power mosfet transistors. Basicly that just about what happens with car amps.
It's easy enough to fix IF, IF you know what your doing. First you
need to check the output transistors with a digital volt meter on diode check, If they check out then check your power supply mosfet transistors. I can almost guarantee this is your problem. Very common. I buy non working amps all the time and repair them. Listen to pbabin also he has helped me out. Good luck

Sep 08, 2008 | Legacy Audio American Legacy II LA490 Car...

4 Answers

No response from amp


it sounds like you have a bad ground make sure its on the froame or body and make sure any rust or paint is sanded or scraped off

Feb 09, 2008 | Sony Xplod XM-554ZR Car Audio Amplifier

1 Answer

Channels Not Playing


i had afriend who is atechnician. his boss amplifier stopped working on one channel,so what he did is openened the amp,tested the mosfet transistors and it showed signs of failure.then he went shopping for same type of mosfet transistors and with no luck in buying the right type, he put the amp away for acouple of weeks. then one day he hooked it up and strangely it worked again. he told me that while it was hooked up itwent into protection mode and for some reason it worked later. so i would not open it because of static discharge i would disconnect the amp for maybe acouple of weeks then hook it back up.... its worth a try & good luck

Nov 10, 2006 | Boss C350 Car Audio Amplifier

Not finding what you are looking for?
Car Audio & Video Logo

Related Topics:

421 people viewed this question

Ask a Question

Usually answered in minutes!

Top Car Audio & Video Experts

xxxxxx xxx

Level 3 Expert

4874 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

yadayada
yadayada

Level 3 Expert

76846 Answers

Are you a Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...