Question about Kenwood Audio & Video Receivers

1 Answer

Kenwood KR-A4070 blowing 5a 125v fuses

Radio was playing fine, and all at once stoped playing. Power trans seems to be working, will click on and off. I pulled top cover found a 5amp-125v fuse blown. Replaced fuse, but still blowes at plug in. Stand-by light still works, but have no sign of power on front panel. Why'll looking for any visual problems found a ceramic resistor/or what looks to be a resistor with crackes. (mpr 33d 0.22ohmkx2 YOUHYUN) This are the numbers that are on the part with the cracks in it.

Posted by on

  • rzrfreefr
    rzrfreefr Aug 05, 2013

    can you show a picture of where is it ? I have the same effects on KenWood KRF-V4550D

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 4,234 Answers

I am guessing that the ceramic resistor is close to the output transistors. I would also guess that one or more of the output transistors has shorted. This causes a high current draw that is blowing the fuse. You could also have a power supply problem. The ceramic resistor is a .22ohm dual emitter resistor that is used in the output stage. The transistors located close by are probably shorted and should be replaced. Start there and let us know what happens once the transistors and the resistor are changed.

Dan

Posted on Oct 10, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Need e125a 125v fuse


http://www.intl.onkyo.com/downloads/manuals/pdf/r-805x_manual_e.pdf See page 4 of your manual at the provided link. This is the only mention of a fuse in the entire manual including plug specifications. 5amp.

Sep 15, 2015 | Onkyo For Parts R-805x Receiver

1 Answer

There seem to be no power. Nothing is on. I change the 9 Volt battery and still nothing is on. No radio, No clock. For a Bose clock radio. David Fong


Hi,
Sorry for the late answer to your solution. There was some problem with my account in fixya.
I was not able to post any solution from yesterday as the new site is in development stage as told by the customer care of fixya.

I seen your question. You have to check the power cord of your bose wave radio first. Is there is any loose contact at its socket at the both ends. If its seems ok, Then you have to check the inline fuse inside the wave radio. For that you have to open the wave radio. I am giving you this solution assuming that you are aware of reparing electronic items. If you have some knowledge on fixing electronic items then you can fix it yourself.

Before removing the wave radio remove the power cord from the sockets. There will be 6 screws at the bottom of your wave radio in some models its 8 numbers. After removing the screws turn the radio and pull out the top cover. You can see the inline fuse near the AC input socket where you connect the power cord. Using a multimeter test the contnuity of the fuse. it should show zero ohms. if no, then the fuse is faulty remove the fuse and replace with a new one and power up the radio and check

If there is no other fault the wave radio will work ok. If the fuse blows again then the transformer of your wave radio is faulty. The primary winding of the transformer have some short inside. As it is a custom design the C core transformers are only available through bose service centers. If they are willing to supply the transformers to customers then buy it from them and replace yourself. If not, then you have to give the radio to them to be repeired. If you need any more assistance feel free to conatct me through fixya.The fuse will look like one in the picture.

Ajin12_6_2011_4_00_30_pm.gif

Dec 05, 2011 | Audio & Video Receivers

1 Answer

I bought my fender frontman 15 about 5 months ago, and yesterday i was playing it and it just stoped to work. Now the amp wont turn on... what can i do?


On the back of the amp, where the power cord plugs in, there is a cover that holds a 500 milliamp fuse. Check that.

Jan 21, 2011 | Audio & Video Receivers

1 Answer

I have the same problem. The fuse blows every time I plug the Sony STR-DE135 into the wall. I did not find the F901 at Radio Shack, so I bought a fast acting 5 Amp 125V Fuse at the Hardware store. It blew...


There is usually one or two normal clicks on power-up. A self-protection relay activates after a short delay for circuit and power stabilization plus some internal cheking for shorts and thermal issues.

If it keeps blowing fuses you are stressing it a bit more every time you feed it another one. I'd get it in to a Pro for repair.

Mar 02, 2010 | Sony STR-DE135 Receiver

1 Answer

Pioneer stereo receiver has sound and power problems.


i would suggest checking the wires on the speaker switch board, thats usually the main cause of this problem..but i dont recommend buying pioneers newer stuff

May 04, 2009 | Pioneer Audio & Video Receivers

3 Answers

Sony str-de845 Powers up, relay clicks, fuses BLOW!


This condition, may be produced by defective components (Q506, Q507). you can remove those transistor, replace the fuses, power-on and wait for relays click. if the fuses not blown again, them replace both transistor.

Mar 05, 2009 | Sony STR-DE845 Receiver

1 Answer

Onkyo HT-R560 receiver


The unit most likely blew up a capacitor. If you look in through the slots on the top of the unit you should see 2 big black caps (C6901 and C6902) with shiny silver-ish tops. I should also point out that you probably flew up a 125v 8A (F901) glass fuse on the board that the AC cord plugs into. The glass fuse can be found at Radio Shack, but the caps are a bit more troublesome to find. They are 10,000uF 69v and thats just not a standard part, so you may need to up the voltage requirement and buy a 75v cap. Total to fix the amp yourself: Should be about $35 with shipping.

Sep 08, 2008 | Audio & Video Receivers

2 Answers

Aiwa AV-D58 wont power on


this happened with mine two. all i did was press powert and enter at the same time and it clicked for like 2 hours or so and then it turned on. it was cool

Dec 09, 2007 | Aiwa AV-D58 Receiver

2 Answers

Display


Protector appears on the screen

Nov 22, 2007 | Sony STR-DE715 Receiver

5 Answers

Mono only mode problem


It sounds as if you have dirty or sicky relays in the speaker outputs. These relays are there so protect the amplifier's circuitry should there be a problem with your speaker system. If the amp detects a fault it won't switch the relay to allow the speaker to be used. Obviously you don't have a speaker problem but because the relays are dirty or sticking audio isn't being allowed through. By tapping the unit it's activating the relays as it should. If you wish to find the culprits, WITH THE POWER PLUG PULLED OUT. look for small clear plastic boxes on the motherboard, Maybe 1 1/2 inches tall and and inch square. With a bit of pulling and luck the clear plastic top should pop off and leave the innards on display. Gently insert a very fine file between the contact points and give them a few rubs. Do this to all the contacts and put the plastic top back on. Try the unit out and see if one channel works. If it's all OK do the rest in the same way. It's these relays which you hear clicking by the way. If they're dirty they'll still click but not do their job. bmw

Jul 14, 2006 | Sony STR-DE945 Receiver

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

Related Topics:

868 people viewed this question

Ask a Question

Usually answered in minutes!

Top Kenwood Audio & Video Receivers Experts

 Elex
Elex

Level 2 Expert

49 Answers

ask_not

Level 1 Expert

28 Answers

Fbcgilly

Level 1 Expert

13 Answers

Are you a Kenwood Audio and Video Receiver Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...