20 Most Recent Krell KAV400Xi Amplifier Questions & Answers


Hi,

Try to plug it in other known working outlet, if still the same symptoms, this is an indication that there's a faulty parts inside the unit. First thing to check is the internal fuse of your unit (I'm assuming here that the unit has no led light at the front panel), if it is already out of warranty, open the top cover and check the continuity of the fuse using the multimeter, if you found it open replaced it with same current(ampere) rating and then power on the unit again... Sometimes fuse fail because of voltage surge to guard other parts...

Jdvillanueva

Krell KAV400Xi... | Answered on Sep 08, 2011


it is possible that you have eitherr a power realted issue or a protection circuit in acttion. First of all takeou the plugs and ccheck if there is corrosion in the pins, burn marks. If so clean them using a good emery paper,If so do not use the outlet that you are presently using. Otherwise If this seems OK, then you must check your speaker connections and check to find if the amp is over heating when it cuts off. Open the set top coverr and maek a good cleaning and tightening of the cords and boards while checking for burning smell. If you are able to access the main board, try to check for dry soldering bad joints in power and output cicuits. Use a good iron to do the resoldering and check again. If set is cutting off at high volume or high bass, then reduce load to confirm. If so you will have to check for distortion or wrong biasing in the output stages. Hope you check this out. Good day

Krell KAV400Xi... | Answered on Jul 18, 2010


switch input cables and try this will confirm if the amp has a problem or the input signal

Krell KAV400Xi... | Answered on Jun 25, 2010


try subbing out another newer speaker for the left one ? if sound returns then that older speaker is defective .

Krell Audio... | Answered on Nov 12, 2016


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.

Krell Audio... | Answered on Sep 16, 2016


http://www.manualslib.com/manual/90296/Krell-Industries-Ksa-100s.html?page=18#manual Look on page 18

Krell Audio... | Answered on Sep 10, 2016


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
203-331-0671
Steven@theservicedepartmentct.com

www.theservicedepartmentct.com

Krell Audio... | Answered on Nov 14, 2014


Chances are that you have a "Leaking" capacitor in the final stage.

Time for the repair shop :(

Krell Audio... | Answered on Jun 14, 2014


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.
http://electronicshelponline.blogspot.com/

Krell Audio... | Answered on Apr 01, 2014


it is possible the the processor could be locked up, do to a small power surge, and if you leave it unplug for 30MIN., it should reset back to normal.

Krell Audio... | Answered on Dec 06, 2010

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