Question about Audio Players & Recorders

1 Answer

Dead amp Bought a diy krell ksa 150,after cleaning i have now put it together but it turns of after a couple of seconds.Have very strange readings over the caps in the powersupply.Where did i mess up you think!!!! Kindly/Ingemar

Posted by on

  • 1 more comment 
  • ingemar johansson Mar 11, 2008

    Hi robotek.

    I hope you understand my"swenglish"As i told ,the amp turns off after just 5 sec.But i tried to take a measurment over the terminals on the caps its supposed to be 63v dc but ive got 15 on one of them and some very strange readings on the other ones.The voltage from the transformers seems to be ok at 48 ac.Where do you think i messed up?


  • ingemar johansson Mar 13, 2008

    Hi Graeme.I have been looking my self for a circuit but its a well hidden krell secret:).Yesterday i tried to just connect left and right chanels without using the psu caps and it works out with the right chanel but when i hook up the left one as well it is turning of after approx 15 sec!!

    Thanks for helping out!!!!


  • Graeme Ross
    Graeme Ross May 11, 2010

    Hi there, can you tel me a bit more about the problem you are having... what strange readings are you getting



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 1,512 Answers

Hi Ingemar... sorry for the delay getting back to you. It sounds like you may have a problem with transformer connections, or maybe orientation of a bridge rectifier. Check all connections in the power supply with particular attention to these. Check also that th3e caps are fitted the correct way around. Look also for hairline fractures in the PCB about the power supply. I am trying to find a circuit for your model at the mo. Not having much you have one you can link me to or upload to FixYa? Would get me on the same page as you to really get into the problem.


Posted on Mar 13, 2008

  • Graeme Ross
    Graeme Ross Mar 13, 2008

    found an old post on an audio forum about the problem you have... have you updated to Sprague P/s caps...

    check the DC offset at the output of the amp. If you have a problem here, the power supply may well sag, check for failed output transistors if that's the case.


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Where can I get a fuse for my Krell KSA 300 amplifier.I had a blown fuse on the left channel.

Fuses rarely go on their own. The cause is likely to be a shorted semiconductor device in the left channel output.
Fuses are generally not specific to any brand. Is the fuse a tube with metal ends? If it is measure the length in MM. Then look at the end and you should see the rating. Either in A for Amps or MA for milliamps.
Any electronic parts supplier should have the one you want in stock. Buy several, for if the part I mentioned has gone, it will blow again.

Sep 09, 2016 | Krell Audio Players & Recorders

1 Answer

How do I brigde a krell show case amp from 5 channels to three channels

Thai will require removal of the top cover to move jumpers or program dip switches in proper order. This will be explained in the owners manual which is located at Krells web site.

Steven Leckrone
The Service Department
30 Unquowa Hill St
Bridgeport CT 06604

Nov 14, 2014 | Krell Audio Players & Recorders

1 Answer

Parts included with new amp in box

You should be able to figur that out but first read the instructions they contain some amazing information. I can not help you because I have no idea of what you are asking.

Oct 05, 2014 | Krell KAV-300i 2-Channel Amplifier

1 Answer

Hi, my Krell KSA 150amp is running cool any suggestions as to why. Many thanks

Audio output section circuit draws enormous current at idle stage. Contact any service electrician to detect the fault and get it repaired. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts.

Mar 31, 2014 | Krell Audio Players & Recorders

1 Answer

Will the amp play 2 ohm speakers

If your amp has ability to play 2ohms, then it will play. It will play even it dosn't have the provision. It might cause damage to the audio output at certain level if volume level is increased. My advice is to check your amp. or read the user mannual for perfact usage. Thanks

May 16, 2010 | Krell Showcase 5 5-Channel Amplifier

1 Answer

Convert to 220v krell amplifier ksa-250

if it is conertable to 120v there will be a tap on the transformer input for that

May 13, 2010 | Audio Players & Recorders

1 Answer

Hello, after plugging on Ipod through my preamp hooked through my krell kav 300 integrated amp I heard a super loud noise and lost power. I examined the fuse and it looks fine. What do I do?

Sounds like the volume was way up when the iPod turned on. iPods are DC and cause a sudden thump through the speakers when they power on.
If the fuse is not blown, there may be another fuse you have not seen. Most amps have three to five fuses especially a 150watt/channel like the Krell.

Apr 17, 2010 | Krell KAV-300i 2-Channel Amplifier

2 Answers

Wiring Diagram required

At this point you may have fried the output stage. Is there a specific model listed on the back? I need that to locate the schematic.


Sep 29, 2008 | Krell Home Theater Standard 7.1...

1 Answer

Krell 250a power amp

Hi There WLAW,
I am in Auckland NZ and do repair work for a high quality Amplifier chain so I could have a look at yours for you....

Being Local in Auckland it will save you sending it away off shore to Australia.

Cheers From YUBEUT (09) 357 7496

Dec 26, 2007 | Krell Home Theater Standard 7.1...

Not finding what you are looking for?
Audio Players & Recorders Logo

Related Topics:

166 people viewed this question

Ask a Question

Usually answered in minutes!

Top Audio Players & Recorders Experts


Level 3 Expert

98694 Answers


Level 3 Expert

4678 Answers

The Knight
The Knight

Level 3 Expert

69654 Answers

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

Answer questions

Manuals & User Guides