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The internal 1.6 amp fuse in the power supply sometimes blows on or after switch-on.If the fuse does'nt blow the amplifier appears to work as normal on low volume.

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Check your wiring and the speakers for shorts...also, you need to look at the back of the amp..there should be an impedance rating for the speakers..it will be in ohms...if your speakers are lower than the rating on the amp then the fuse will blow as this causes the amplifier to overload..if the amp is rated for 8 ohms and you connect 4 ohm speakers this can cause this issue

Posted on May 28, 2011

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I shorted out the speaker wire going to sub and now the amp doesnot work


You have probably blown the internal power supply fuses in your amp or the speaker fuse in the amp. The chances of blowing your sub are slim.

The internal fuses can sometimes be hard to find. They aren't usually intended for the user to change. DO NOT replace them with higher amperage fuses if they blow after you replace them as there has been severe damage caused to the circuitry. Also, don't replace them with higher amperage fuses because you think that this will let you get more power out of the amplifier. This won't work, and you will end up blowing your expensive output devices.

Oct 05, 2014 | Audio Players & Recorders

1 Answer

My 2000w TNT amp blows fuses as sooooon as I put a fuse in. What is the problem with the amp. is it internal external? I also checked my wires and they all look good


Sounds like you're grounded out somewhere. I'd check your main power wire again, make sure there isn't any abrasions or cracks in the insulation. I had a Fosgate amp that would blow fuses everytime they were put in. turned out to be one of the screws to mount the amp to my floor board was grounding it out, pulled the screws and has worked fine ever since

May 04, 2012 | Alpine Earthquake T2000wd/1 Car Amplifier...

1 Answer

It keeps blowing a fuse


Generally, if you are using the manufactures fuse rating you can use a slightly higher rating and it will resolve the blowing fuses. Fuses supply resistance, if there isn't enough resistance you'll fry the system board in the amplifier. But if you have 25 amp fuses installed, install 30 amp, if you have 30 install 35 amp, 35 install 40. Anything higher will damage the amp.

Hope this helps.

A rare chance, something may be internally wrong with the amp and shorting it out which will blow the fuse.

Use the incorrect wiring of subs to the amp, you'll blow fuses and damage the amp from it turning off consistently. The amp should be running at 2 ohm stereo stable or 4 ohm mono stable.

Very few amps are designed to run at 1 ohm or less. Not to mention the subs can't handle it.

Jul 28, 2010 | Power Acoustik TS980-2 2 Channel 980W...

1 Answer

Unit does not power up. Opened unit and found fuse closest to power switch blown inside unit. Will replacing this fuse get my unit working again? If so, what would cause this fuse to blow? please help.


It is possible that the fuse was blown due to a surge and replacing it will resolve the problem, but I wouldn't expect it. Usually when the main fuse blows, the primary stage of the power supply has a problem and the replacement fuse will blow as well. This is not a cheap amp and I would suggest that it be checked by a service tech. A few quick measurements internally can determine the likely fault and should not cost too much as an estimate fee.

Please keep us posted.

Dan

Jun 22, 2010 | Sonance Sonamp 1250 12-Channel Amplifier

2 Answers

What do you do when your amp keeps blowing fuses


First off which fuse is it? The inline fuse from the battery or the amplifiers power supply fuse? Blowing the main fuse from the battery is caused by either the load (your amp) drawing too much current or you have a short to ground somewhere. Maybe there is a tear in the 12Vdc line and it is shorting to the chassis of your car. If the amps power supply fuse is blowing as soon as it turns on your amp has a shorted power supply. This will require internal component changes by a technician. If it is blowing after operation at high volumes I would say change the impedance that the amp is driving. If you are at 2 ohm try to rewire your speakers for four ohm. (go from parallel to series wiring then bridge mono or operate the amp in stereo mode)

Feb 07, 2010 | Infinity Reference 1300a Car Audio...

1 Answer

Internal fuse on cambridge a1 mk3 has blown and when replaced,blew instantly??


When the fuse blows suspect an overload in either the power supply or Main Amp section.
Check for burnt/damage parts first!
Power Supply faults that will blow the fuse are: Transformer, Rectifier, Voltage Regulator, Large Electrolytic Capictors, Diodes & any other semiconductor connected with it.
Main Power Amp faults are: any semiconductor device on the heatsink.

Jan 04, 2010 | Audio Players & Recorders

2 Answers

Hi im in Argentina and i accidentally pluged in my amp without an adapter now it doesnt work what needs to be fixd?


The power supply is blown. Argentina is 220V I believe. I have never seen a power supply schematic for this however being that it is low power it is a linear supply not switching. Either the rectifier diodes are blown out or possibly the output capacitors are blow due to approx double voltage. If you try this yourself be careful otherwise get a new amp. Good Luck

Dec 14, 2009 | Marshall MG10CD 10 Watt Combo Amplifier

1 Answer

Have a kenwood kac849 600w amp keep blowing fuse on amp as soon as power is too it power wire got wet and now this can i bypass that fuse some how


It would be very dangerous to bypass a fuse. If it keeps blowing, bypassing the fuse will only create lots of internal damage and maybe a fire as well. The fuse is blowing for a reason, the amplifier is not going to somehow start working because you bypassed the fuse. You also need to stop trying to turn it on, every time it blows the fuse, it keeps stressing the components inside. You have a shorted power supply, probably water damage as well since the power wire got wet.

I repair car amplifiers for a living, and can tell you with all honesty that bypassing the fuse would be a terrible mistake to make, the amplifier would end up being un-fixable with holes burned right into the board.

Please, just take it in for service or get a new amplifier. That is the only sensible thing to do. The amp will not start working bypassing the fuse, it will only start smoking.

Jul 10, 2008 | Kenwood Car Audio & Video

1 Answer

VSX-D466S


Bad News!
If the fuse is in the mains (power line) you could have a bad rectifier or other problem in the power supply. Most amplifiers nowadays have switching power supplies and they are not as easy to troubleshoot as the older linear supplies. If an Output or driver transistor is shorted, the power supply fuse will dump just as fast, load or no load.
Mister Phil

Apr 06, 2008 | Audio Players & Recorders

1 Answer

Amp blows fuses Checked out OK: output transistors, power supply.


The fuses are there to protect the internals of the AMP.....
Please check that the correct fuses are installed......
if the incorrect ones are installed then a fire may develope...

There should be a manufacturers lable on the external chassis that details the fuses to use....

Fuses now days can be slow blow or fast blow....so the correct fuses must be used.....dont increase the fuse rating past the chassis panel label...but make sure they are correct...if they are correct then the amp needs a service to determine where the peak loadings to the power supply are originating from...

Some one may have installed incorrect fuses in the past...

Cheers from YUBEUT


Nov 03, 2007 | Sonance Sonamp 260 MKII 2-Channel...

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