Crown XLS 802 D Amplifier Logo

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Posted on Oct 26, 2017

Crown XLS402 Amp

Amplifier power LED flickers but dies after a second, R22 is extremely hot (even for a ceramic!) although value is correct. LED2B illuminates for 1 second after power-on but fades out. No sound and some smoke was reported. No obviously failed components. Not got a schematic so hoped someone had run into a common symptom with this unit :)

4 Related Answers

Anonymous

  • 1512 Answers
  • Posted on Apr 04, 2008

SOURCE: Crown Amp Possibly Blown??

Hi, probably worth fixing, Crown gear is generally reliable, but this one has failed for some reason. Puffs of smoke are not generally good... If it has blown an output array, expect a costly repair.

regards
Graeme

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Anonymous

  • 4234 Answers
  • Posted on Feb 17, 2009

SOURCE: amp lights up but when it goes to actually kick on it shuts off

The only component I can think of that fits your description is a bypass capacitor for filtering high frequency interference. That should NEVER get hot. This amp is going into protective shutdown. This unit should be brought in for service. Continued attempts to run this will end up causing additional damage. Where are you located?

Dan

Anonymous

  • 4234 Answers
  • Posted on Jun 29, 2009

SOURCE: i need the schematic for the crown amplifier

These are available for purchase from Crown. Generally they are not available on the web. Is there a specific problem that you are having?

Dan

Fred Yearian

  • 5603 Answers
  • Posted on Nov 08, 2009

SOURCE: Crown XLS402 amplifier will not work

It is probablly in protect mode due to a failure. This prevents blowing your speakers.

You will need to have or do servicing on it. First verify that you can unplug ALL INPUTS and that speakers are connected and problem of the protect LED exists. A bad input MIGHT be causing this due to a ground loop.

Make sure NONE of your speaker leads are grounded or shorted.

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