Question about Boss NEW AR3000D 3000W CLASS D MONO BLOCK CAR AUDIO AMPLIFIER AMP 3000

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Goes in and out of protect mode.

So i am about to replace the capacitors because they were blown but the fets are like clipped and glued to the amp. How can i remove the board withouth damaging the fets.

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2 Answers

What does the red and green light mean ???


red and green light? there is most likely a protection and a power light. The red I assume would either be a protection light or a clipping light signal. Does the amp kick off then these lights kick on red then to green?

May 31, 2010 | Planet Audio VX4002 Car Audio Amplifier

1 Answer

Amp goes into protection straight away.there are no shorted power supply or output Fets


mines does the same i just think the amp is poorly made get it bench tested

May 20, 2010 | Orion HCCA-D5000 Car Audio Amplifier

1 Answer

The TV shut off, made a popping sound. The


Power board short and bad capacitor blown, capacitors usually pop because of shorted or open rectifiers and linear devices that warp inside. This happens due to excessive heat exposure from the current draw. Bad diodes and FET's are usually the root cause as to why capacitors bulge then eventually pop. This means the the x-y sustain boards are not getting their supply voltage resulting a no picture....

The red light flashes an error code for a technician to read, the tv is in protection mode to prevent further damage. Get it serviced at your local repair center or take it back if its under warranty.....

Nov 04, 2009 | Panasonic TH-42PX75U 42 in. Plasma...

2 Answers

I have a thunder 5604 and all of the suden the short light came on and stop working, i disconect it and , put it back but th light still on an no sound. it doesnt smell like burn, im a mechanic and...


theres a few possible issues pull and replace all of the fuses also use atleast 4 ga power and ground wires if ur ga is 6 or up get a new amp kit i know my protect mode goes on when the ground isnt connected if none of that works take it to the company you got it from and have them check out the internals

Jun 17, 2009 | MTX Thunder5601 300W x 1 Car Amp Mono...

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 www.maxxsonics.com


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

Amp in protection mode as fets r damaged


Try http://www.mouser.com. They stock over 30,000 semiconductors and chances are good that they will have it or a direct substitute. You may wish to also check out the information here about finding the best replacement.
http://www.electronicrepairguide.com/Mosfet.html

Good luck!

Mar 26, 2009 | Car Audio & Video

1 Answer

No sound coming from speakers Blaupunkt GTA470 Amp


Amp Failure:
There are many different ways that an amp can fail but the two most common failures are shorted output transistors and blown power supply transistors (< those are not blown). There are several types of protection circuits in amplifiers. The most common are over-current and thermal. The over-current protection is supposed to protect the output transistors. Sometimes it doesn't work well enough to prevent the failure of the output transistors but it will work well enough to shut the supply down before the power supply FETs are destroyed. If the amp remains in protect mode, goes into protect mode or blows the fuse as soon as the remote voltage is applied, shorted output transistors are almost certainly the cause. If the fuse protecting the amp is too large, if the protection circuit doesn't respond quickly enough or if the power supply is poorly designed, the power supply transistors may fail. If you see a lot of black soot on the power supply transistors (near the power transformer), the power supply transistors have failed. Soot on the board doesn't necessarily mean the transistors have failed. Sometimes, technicians don't clean up the mess from a previous failure. Transistor Failure/Checking Transistors:
In general, when a transistor fails, it will either short (common for output AND power supply transistors) or open (common for power supply transistors). Transistors act like valves. They control the current flowing through a circuit. A shorted transistor acts like a valve that's stuck open (passing too much current). In the case of an output transistor, the shorted transistors tries to deliver the full rail voltage to the speaker output terminal. If you've ever seen a damaged amp that pushed or pulled the speaker cone to its limits when the amp powered up (common on some Rockford amplifiers), that was almost certainly due to a shorted output transistor. When checking transistors, you most commonly look for shorted connections inside the transistor. You do this by using a multimeter to look for low resistance connections between the transistor's terminals.

Dec 31, 2008 | Blaupunkt PCA460 Car Audio Amplifier

1 Answer

Amp turns on just fine but no sound comes out


Amp Failure:
There are many different ways that an amp can fail but the two most common failures are shorted output transistors and blown power supply transistors (< those are not blown). There are several types of protection circuits in amplifiers. The most common are over-current and thermal. The over-current protection is supposed to protect the output transistors. Sometimes it doesn't work well enough to prevent the failure of the output transistors but it will work well enough to shut the supply down before the power supply FETs are destroyed. If the amp remains in protect mode, goes into protect mode or blows the fuse as soon as the remote voltage is applied, shorted output transistors are almost certainly the cause. If the fuse protecting the amp is too large, if the protection circuit doesn't respond quickly enough or if the power supply is poorly designed, the power supply transistors may fail. If you see a lot of black soot on the power supply transistors (near the power transformer), the power supply transistors have failed. Soot on the board doesn't necessarily mean the transistors have failed. Sometimes, technicians don't clean up the mess from a previous failure. Transistor Failure/Checking Transistors:
In general, when a transistor fails, it will either short (common for output AND power supply transistors) or open (common for power supply transistors). Transistors act like valves. They control the current flowing through a circuit. A shorted transistor acts like a valve that's stuck open (passing too much current). In the case of an output transistor, the shorted transistors tries to deliver the full rail voltage to the speaker output terminal. If you've ever seen a damaged amp that pushed or pulled the speaker cone to its limits when the amp powered up (common on some Rockford amplifiers), that was almost certainly due to a shorted output transistor. When checking transistors, you most commonly look for shorted connections inside the transistor. You do this by using a multimeter to look for low resistance connections between the transistor's terminals.

Seems as you have blown an output. Seek repairs.

Dec 29, 2008 | Power Acoustik A3000DB Car Audio Amplifier

1 Answer

Amp powers on, no sound from subs


the output is blown. It is in need of service.
There are many different ways that an amp can fail but the two most common failures are shorted output transistors and blown power supply transistors (< those are not blown). There are several types of protection circuits in amplifiers. The most common are over-current and thermal. The over-current protection is supposed to protect the output transistors. Sometimes it doesn't work well enough to prevent the failure of the output transistors but it will work well enough to shut the supply down before the power supply FETs are destroyed. If the amp remains in protect mode, goes into protect mode or blows the fuse as soon as the remote voltage is applied, shorted output transistors are almost certainly the cause.

Dec 28, 2008 | Alpine MRD-M1005 Car Audio Amplifier

2 Answers

My amp wont go past protect mode


Disconnect all speaker wires and signal cables from the amp. If it powers up (no protect light), the wiring needs to be checked. If it still shuts down (goes into protect), the amp likely has blown output transistors.

Dec 01, 2006 | Lanzar Vibe 218 Car Audio Amplifier

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