Question about Hifonics BXI 1606D Car Audio Amplifier

2 Answers

Hifonics BXI1606D repair?

My amp one day suddenly went into protect mode. I troubleshot it and found that the problem was blown MOSFETs. This is the first amp i will repair on my own and i found the problem, but i have a different problem. The MOSFETs are prtected by a metal plate that i cannot remove. Can I just cut the plate off from the heatsink? or is there a special tool used to remove this plating? if u need to see a pic pls let me know and i will email you with a better description of what I am talking about.

Posted by on

  • Angel Granados
    Angel Granados Aug 09, 2007


  • Angel Granados
    Angel Granados Oct 04, 2007

    THANK YOU very much for the information it was very helpfull. i sure hope i can help you if you have any questions in the future.



2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert who has answered 200 questions.

  • Expert
  • 219 Answers

There are two types of metal clamps that are in common use on these type of amps. One of them you can just pry up and off of the heat sink and the other is clipped into a groove at the top back of the heat sink. This is the hardest one to remove and put back on. If there is a small square hole at the top of the clip then you have the hard to remove kind. You must counteract the sprind tension of the clip by sticking a tool (perhaps a small pair of needle nose pliers) into that square hole and pry DOWN (not up) in order to unspring the part that is clipped into the heat sink. Be careful you don't snap off the end of your tool. It takes quiet a bit of pressure to unclip it. You might use a small flat tip screw driver to pry up on the part that is clipped to the heatsink at the same time you are prying down at the square hole. This is not a pretty process and it is just as hard to put it back on after the repair. Maybe even harder. If anyone knows of a better way to do this please let me know too because these clips are a royal pain in the butt to deal with and I sure wish I knew of a better way to do this. Maybe the manufacturer has built a special prying tool that will do it much easier, but I've never seen one. Good luck and be careful you don't break the clip while prying because that opens a whole 'nother can of worms.

Posted on Aug 03, 2007

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert who has answered 20 questions.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

  • Expert
  • 113 Answers

There is an easier way. this can be made from bicycle spoke smaller angle is about 3/16 inch . slightly sharpen tip not too much.

Posted on Aug 09, 2007

  • Anonymous Aug 09, 2007

    heres how.
    ok guys let me know how it went



1 Suggested Answer


6ya staff

  • 2 Answers


Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

I have a hifonics Brutus bxi1606d and every time I turn key over it goes into protect help please

Try checking your speakers and speaker wires for shorts and/or grounds. If they are fine, you probably have bad transistors in the amp. This is best repaired by a professional.

May 29, 2014 | Car Audio & Video

1 Answer

Amp is in protect mode

If you have'nt fixed your amp by now I thought I'd tell ya a couple of things why it's going into protect. The basics. Blown subs, bad power suply or mosfets, and blown output transistors/mosfets. Still need help let me know. I repair amps for a living and i'm the cheapest you'll find and honest. I also give the longest warranty. I'm tired of other people rippin people off on repairs. Let me know.

Btw, I’m available to help over the phone in case u need at

Apr 24, 2010 | MA Audio HK401SX Car Audio Amplifier

1 Answer

Amp not working

sounds like the amp is going into protection mode. maybe a sub is shorted (blown). Or, the only other possibility is the mosfet transistors on the inside of the amp are blown.

Feb 01, 2010 | Hifonics Brutus BX 1205D Car Audio...

1 Answer

Need mosfets for hifonics amp sfp50n06

That is a Semiwell part I believe. It is an N-Channel power mosfet. Go look on their website they may have an alternate part you can use.

Dec 18, 2009 | Hifonics Brutus BXi 1206D Car Audio...

1 Answer

HiFonics txi4008 not working, partially lighting up

Sounds like your amp has some power supply compents shorted out. Maybe some of the power mosfets are shorted and your only getting a little bit of power. That why only the H is lighting and as far as the green light, it don't take much for it to turn on. If it was major it would go into protect mode but it is'nt. I repair amps for a living and I'm the cheapest you'll find. But if you know about electronics and think you can take a crack at it, check it out. Becareful you could do more damage. Let me know if your interested. [email protected]

Btw, I’m available to help over the phone in case u need at

Jun 06, 2009 | Hifonics Brutus BXi 1206D Car Audio...

1 Answer

Cant get protect mode off on amp

you burned up a couple of dioeds if if wnt go back to a regular mode

Apr 01, 2009 | Hifonics Brutus BX 1605D Car Audio...

1 Answer

My Hifonics BX1500d is still going in protection mode... can that be fixed? greets Gerben

sorry, i am in the US. I couldnt begin to tell you where to get your amplifier repaired.

Try contacting HiFonics at

There are 3 possible conditions a HiFonics amplifier will go into protection -

Ground Loop - Blown or damaged speaker causing damaged Output FET.

Power Supply Failure - Blown Capacitors, Damaged FETs, Faulty Relays.

Thermal Shutdown - Excess Heat.

Mono channel amplifiers are the simplest to work on - and I would Estimate a repair cost of $75USD if it is a simple FET replacement.

Look at one hour of labor plus parts.

Hope this helped.

Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

Mar 28, 2009 | Hifonics BX1500D Car Audio Amplifier

1 Answer

Hifonics bxi2006d stays in protection

I am Maxxsonics distrubutor, they will not release the diagrams to anyone but they may sell you a new board. i have had 1 out of over 500 of the 2006 / 2008d amps do the same thing and they replaced the amp completely because they have so few extra repair parts for them (cuz they rarely fail)
here is their direct number just ask for Kellie and she will tell you what they can do for you.


Dec 19, 2008 | Hifonics Brutus BXi 1206D Car Audio...

1 Answer

Amp Problems

He needs to confirm that he has both B+ and remote turn-on voltage at the amp.

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp (not on the point where the ground wire connected to the vehicle) and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.

Jun 20, 2008 | Hifonics Brutus BXi 1206D Car Audio...

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

Related Topics:

533 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hifonics Car Audio & Video Experts


Level 2 Expert

93 Answers

Mike Duncan
Mike Duncan

Level 2 Expert

219 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1176 Answers

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

Answer questions

Manuals & User Guides