Question about Kenwood Audio & Video Receivers

1 Answer

Kenwood Basic M2a blowing the 6a fuses due to a short in one pair of the DAT1521 transistors

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I live in Belgium and I like Basic M2A... I have got 4 basic M2A, 1 M1A and 1 M1.
I am electronician and normally can repair it. If I can help you, let me know :

Best regards,


Posted on Feb 15, 2009

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

How to find why my Pioneer SX-315 is blowing fuse 125V 8 Amp ?

Fuses blow due to an overload. Generally caused by a short circuited semi-conductor. The most likely cause in your case is something in the power amp section. Chances are something on the heat sink. The device might even have blown up! But if the amp uses transistors in that stage you can easily check these with the multi-meter. All you have to do is put the test probes on the terminals and on the Ohm setting you get a reading like you have touch the probes together - then you have found the shorted part. There might be more than one that has failed so test all the transistors. Anything connected with the power supply can cause the short. But since the biggest cause of fuse blowing in power amps is the main output stage I wouldn't bother with the power supply till you have eliminated the power amp. Failure of devices in that section is also linked to faulty speaker wiring so check that too.

Apr 28, 2014 | Audio & Video Receivers

1 Answer

SONY RECEIVER MODEL STR - D315 keeps blowing a fuse

When the main fuse blows on a sony, it is usually caused by shorted output transistors. You would have to replace these transistors before the unit will not blow the fuse and power up correctly.

May 23, 2013 | Audio & Video Receivers

1 Answer

Blown sony reciever fuses

Fuses in Sony receivers usually only blow if the output transistors on one channel have shorted out. These transistors will need to be replaced, or the unit will just keep blowing the fuses.

Dec 23, 2012 | Sony Audio & Video Receivers

2 Answers

My kenwood reciever kr-a4070 keeps blowing a fuse

have you tried a different outlet? something my be wrong internally

Jul 31, 2012 | Kenwood Audio & Video Receivers

1 Answer

Fuse problem

You almost certainly have a shorted output transistor. A check across the pins of each transistor will find the culprit. Just look for a reading that is drastically lower than the others. When you find one be sure to check its' mate, as these are used in pairs.

May 21, 2010 | Onkyo TX-SV535 Receiver

1 Answer

Sony reciver blows the fuse when i turn it on

The fuse opens due to a short circuit in the receiver most often it is a set of output transistors. mp1620 mn2488 are common in sonys

Oct 16, 2009 | Sony Audio & Video Receivers

1 Answer

Blows bothe fuses on power supply bd. b- shorted

The transistors you need are 2SD2560 and 2SB1647. (either you miss-read the D for a B or it was a typo) You can get them at:
2S is a prefix on all Japanese transistors.
The 010 is a date code

Also check for open resistors from the base of those transistors and the dual emitter resistor (large white three leg resistor .22ohm)

Feb 28, 2009 | Sony STR-DE945 Receiver

1 Answer

Kenwood KR-A4070 blowing 5a 125v fuses

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.


Oct 10, 2008 | Kenwood Audio & Video Receivers

1 Answer

I have a kenwood KA 1060 amp, and recently changed the fuse on the first PCB board where the mains power lead connects to the unit as the fuse had blown. After doing so and testing it again the fuse has...

Most likely the output transistors are shorted. This causes the output stage to draw too much current and blows the fuses. Expect a parts cost around $20-$40. Add in the local labor rate for the total repair cost.

Apr 17, 2008 | Audio & Video Receivers

2 Answers

Kenwood basic M2 Amp Lightning strike

you can check the output transistors for short circuits with the low ohms range or diode checker . If they have failed, then it is often a good idea to replace all as much stress can be placed on an output array in this type of failure. to repair reliable, all outputs on an offending channel should be replaced.

Make sure the fuse you replaced was the same type of fuse. check markings.... T stands for sloblo... a fast blo duse may let go at turn on. The power supply may have a shorted rectifier diode in it also.

be aware however, every time a fuse of that rating blows... more damage may be occurring to the amp.

Dec 11, 2007 | Kenwood VR-407 Receiver

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

Related Topics:

508 people viewed this question

Ask a Question

Usually answered in minutes!

Top Kenwood Audio & Video Receivers Experts


Level 2 Expert

49 Answers


Level 1 Expert

28 Answers


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