Question about Denon DRA-375RD Receiver

1 Answer

Amplifier keeping blowing fuse - Denon DRA-375RD Receiver

Posted by on

  • dhwheeler May 11, 2010

    I have the same problem with my 5 amp/125 watt fuse, and it is not a blown speaker. With nothing connected to the amp, the fuse blows as soon as it is turned on. Please help.

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 4 Answers

This almost always indicates a blown speaker. If you have an ohm meter you can use that to test the impedance on your speakers. After disconnecting the speaker - touch the red lead to one connector and the black lead to the other. If it reads something other than 8ohms that speaker is blown.
If you don't have an ohm meter you can simply disconnect one speaker at a time and run that way until the fuse blows. If the fuse never blows then you've found the suspect speaker.
Sometimes blown speaker can hide by stealth. When cold everything is normal. When things start to heat up from use the failed circuit shorts and blows the fuse on your amp.

Posted on Oct 22, 2008

  • stevaleelee Jul 31, 2014

    sorry I didn't notice this. This indicates a short in the amplifier. Best case scenario there is something grounding the positive and negative outputs together. Again the ohmmeter is your friend. Check the impedance between the positive and negative terminal of each output with nothing connected. If your reading is zero you have a hard short. If the reading is not zero - making sense of the data would require professional expertise. If it is zero and you have a hard short- visually inspect the terminals looking for what is causing the short. You might need to remove the cover if there's nothing obvious outside. Most likely the terminals are shorting against the chassis due to faulty assembly or damage. If you are unable to see a simple cause for the short there is probably a failed component inside. Frequently even a novice can identify this type of failure. Look for visibly burned or melted components. If you find something that is most likely the culprit. If you're feeling adventurous try replacing like for like. Some soldering will probably be necessary.

×

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

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Amc amp fuse keeps blowing


Fuses blow when there's an overload. Suspect a faulty semi-conductor device somewhere.

Dec 14, 2012 | AMC Multimedia 2N100-2 2-Channel Amplifier

1 Answer

The two 5 amp fuse inside the amplifier keeps blowing


Hi,

That must be the inrush current.
Maybe you are using the wrong fuses.
Please check if those are fast or slow types.
You need slow types.

Good luck,
Gerard

Jan 17, 2010 | Audio Players & Recorders

1 Answer

I have an spl gorilla series 1250watt amp that blows fuses


REMOVE THE RCA INPUTS AND DISCONNECT THE SPEAKERS, THEN POWER THE AMPLIFIER UP WITH THIS NO INPUT, NO SPEAKER LOAD CONDITION. IF IT STILL BLOWS THE FUSE, THEN IT WILL NEED TO BE SERVICED. IF IT BLOWS THE FUSE BEFORE TURNING IT ON, THEN YOUR PROBLEM IS IN THE POWER SUPPLY SECTION. IF IT BLOWS THE FUSE AFTER ATTEMPTING TO TURN IT ON, THEN YOUR PROBLEM IS PROBABLY IN THE OUTPUT SECTION. ALSO KEEP IN MIND THAT THE P1'S ARE REALLY NOT RATED FOR THAT MUCH POWER AND YOU MAY HAVE DAMAGED THE VOICECOILS. BEFORE REINSTALLING THE AMPLIFIER, MAKE SURE TO CHECK THE SPEAKERS FOR SHORTED VOICECOILS OR YOU WILL POSSIBLY DAMAGE THE AMPLIFIER AGAIN. LET ME KNOW IF YOU NEED FURTHER ASSISTANCE.....V

Nov 19, 2009 | Rockford Fosgate P3001 Car Audio Amplifier

1 Answer

Kenwood KAC-729S keeps blowing fuses. Checked all cables, re-ran power, remote, and ground. All good, still blows them at power-up.


Hello opey_69a,

Here are the troubleshooting steps for fuses blowing.
1) Remove all wiring except ground, power and remote and see if the amp powers up without blowing the fuses. If it does, the problem is in the input cables or speaker wiring.
2) The use of loudspeaker impedances below the recommended minimums will cause the amp to draw excessive current - check.
3) A shorted or grounded RCA cable may cause the fuses to blow - check.
4) If an amplifier fuse blows continually, with only +12 volt, ground and remote leads connected, the amplifier is probably defective, most likely shorted output MOSFET's. In this case the amp needs professional repair or replacement.

Hope this helps.

Sep 19, 2009 | Kenwood KAC-729S Car Audio Amplifier

1 Answer

The fuse keeps blowing in my marantz pm-57 amplifier. It says it takes a T 2.5A 250V fuse. I can only find 2.5A 250V fuses. What relevance is the ''T''.


Goo day sir, the T on the fuse has nothing to do on you marantz fuse blowing up, chances are you amplifier is shorted, check you IC amplifier/power transistor for shorts. Check also your speaker impedance. usually they are 8 ohms. You can use a technician's multitester device to check the impeadance. An imbalance or mismatch speaker can cause a fuse to blow and destroy your amplifier. hope this helps.

Jul 31, 2009 | Marantz PM-15S1 2-Channel Amplifier

1 Answer

I have a 25 wat fuse in my power wire connected to my amp and i keep blowing it. should i put a bigger fuse in it?


Hello grabert205,

You do not say if the fuse blows immediately upon powering up or while the amplifier is operating. If it blows immediately, I'd check the power and ground.

If it is blowing the fuse while operating, I'd try a 30A and see if it holds. At maximum output of 100 watts times 4, the amplifier needs about 31 amps of current at 12.8V. So driving it hard could certainly blow a 25A fuse.

Hope this helps.

Jun 13, 2009 | DHD LCD-9444 Car Audio Amplifier

1 Answer

Blowing fuses


Are you sure you don't have the positive and negative power wires reversed?

Does the fuse blow without remote voltage applied?

Nov 09, 2008 | Jensen JPA285 Car Audio Amplifier

1 Answer

BLOWS FUSES


If it blows fuses only after the remote voltage is applied, the amplifier likely has shorted output transistors.


Let me know if you have any other questions.

Aug 30, 2008 | Rockford Fosgate RF2002 Car Audio...

1 Answer

Fuse keeps blowing


The amplifier probably has shorted output transistors. If the amp only blows the fuse after remote voltage is applied, the damage may be minor. They generally blow two transistors. Sometimes that's all that needs to be replaced.

Let me know if you have any other questions.

Aug 29, 2008 | Jl Audio 500/1 Car Audio 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

Not finding what you are looking for?
Denon DRA-375RD Receiver Logo

Related Topics:

449 people viewed this question

Ask a Question

Usually answered in minutes!

Top Denon Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

4861 Answers

Dennis McCollum

Level 2 Expert

137 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

Are you a Denon Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...