Question about Krell KAV-300i 2-Channel Amplifier

1 Answer

Fuse at power cord blows

The fuse located under the power cord plug is blown.
I replaced it, and it immediately blew again.
Inside, there are 3 switches which I wonder if they are in the correct positions.
They are set to 2, 1, 2.
Any ideas on what my problem could be?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 682 Answers

First check your speaker cabels for short circuit and speaker for  short coil .after you confirm there is no shotr of cabel wires by checking with avometer in ohm postion.connect speaker if the problem excit your speaker is guilty - change it with same configuration.about switches put it in low order and chech for sound level and you can go up after that.

Posted on Mar 05, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

NUMARK DIMENSION 4 1900W blowing power cord fuse


This could be a faulty power cord, ie: two of the wires touching perhaps not visible to the eye. Or a short in the transformer or power supply. Check also internal fuse(s) if they have blown, suspect a faulty device in the power amp stage (on the heat sink) if they have gone too!

Feb 23, 2014 | Amplifiers & Preamps

1 Answer

My JVC 100 watt amp blew a fuse 125v - 6.3a. is there and alternate replacement fuse?


You can buy replacement 6.3 amp fuses at Radio Shack, but in a pinch you can substitute a 6.5 amp fuse. It's only slightly higher in value, so it will still blow soon enough if there's a problem.

However, this doesn't answer the question of why the original fuse blew. Fuses very seldom "just go bad", so before you start replacing a blown one you should find out what went wrong. Check the power supply rectifier diodes and filter capacitors for shorts. They sometimes break down with age or because of power line surges. Also look for shorted output IC's or transistors. If you can't do this yourself, see if any of your friends have experience servicing or let a professional fix it.

Please, don't just stick in larger fuses (or worse, wrap foil around them) when they blow. Many times I've seen what would have been a simple repair turned into scrap that way. Hope this has helped, and thanks for using Fixya!

Nov 08, 2010 | JVC Amplifiers & Preamps

1 Answer

I have a visonik 800watt amp and i got it from a friend for free and i hooked it up right and as soon as i turned it on the 2 fuses blew then i replaced them and tryed it again and it stoped again so i...


Its the amp, do not put any more fuses in it
you need to get it checked out by a technician.

Its probably a power supply fault or blown output devices.

Hope this helps
Thanks for using FixYa

Aug 02, 2010 | Visonik V2508 2-Channel Amplifier

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

1 Answer

I have a B&K power amplifier(home not auto). The original two wire power cord is damaged. I want to replace it with a three wire(positive, negative, ground) Originally one wire went to a fuse and the...


get an electrical tester (screw driver with live indicator built in) and check which socket on your wall is live, connect the live/phase line to the fuse and the neutral to the other plug-in wire connector. conect earth or ground to any part of the power amp housing (should be conductive). do not connect earth to any part of the circuit board. urs is an amp that is not built to have earth connection on the board. be careful. 

Jun 04, 2010 | Amplifiers & Preamps

1 Answer

Blown fuse in stereo amp


well fuse get burnt when there is heavy current flow than the fuse rating so there is heavy current flow and this current flow might be because off short circuit in the PCB and this short circuit might be because of any transistor breakdown so u have to check through the PCB.(Printed Circuit Board)

Jan 05, 2010 | Amplifiers & Preamps

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 | Amplifiers & Preamps

1 Answer

I replaced blown fuse with AUSTRALUX DA205-2A 2A 250V fuse for my Vox AC30cc2x. It blew after a couple of minutes in warmup mode. Have I used the correct fuse?


It's drawing too much current, make sure you install the excact replacement or an alternative approved replacement. Other than that, if it's still blowing the fuse than theres an overcurrent condition in the system...meaning a short.

Nov 21, 2009 | Amplifiers & Preamps

1 Answer

Blown Mains Fuse


You should repleace the old transformer with the new one

Jun 13, 2008 | NAD C370 2-Channel Amplifier

1 Answer

Sherwood AI5010 no sound from either channel


Hi There DEKCAT
Its very unusual for both channels to blow......

I suspect that there is a blown power fuse inside the case......

There are fuses sometime located on the outside rear of the case and these can be easily checked to determine if they are blown..If you find one is blown please replace with the corrrect rated fuse,..... its current rating wil be on a small label on the case outside rear. like 1.0amp, or 1.5amp etc...

If you need to go inside the case please ensure the power plug is removed from the wall socket first.

You will find small glass fuses in the DC power supply feeds and probably one of these has blown, once again replace with the correct rated fuse.

Im not sure if your amplifier is a FET type or a large 32-40 pin IC type as if these are blown you will need a service person to do the replacement...

Please note there is a small relay that clicks 20seconds after turn on at the switch....if this click is not happening then there is problems with the timer circuit or the relay itself...

This relay controls the output to the speakers and as such stops all the sound output if its not working...so the first thing is to check all fuses, if they are OK then check the Relay operations....

Cheers From YUBEUT

Nov 09, 2007 | Amplifiers & Preamps

Not finding what you are looking for?
Amplifiers & Preamps Logo

Related Topics:

289 people viewed this question

Ask a Question

Usually answered in minutes!

Top Krell Amplifiers & Preamps Experts

80stech

Level 2 Expert

92 Answers

Josh Whitehead
Josh Whitehead

Level 3 Expert

1146 Answers

 Grubhead
Grubhead

Level 3 Expert

4585 Answers

Are you a Krell Amplifier and Preamp Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...