Question about Crate Music

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I have a Crate CR212 it started to hum/buzz today. It would not play out any sounds other than the noise. I unplugged everything and still it hummed. I unplugged the unit, check the fuse and replugged and the same thing. I tryed the channel selector from clean to distortion and it started some crackling and then it went dead. the fuse is intact and the house plug is good. I now got nothing .... no lights, no sounds, nothing.

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  • 17 Answers

Are all the tubes lighting up? they should glow like dim light bulbs. If not, replace them with the same model type (12ax7, or EL34 for example).

Often there are two fuses, one to protect the speaker and another to protect everything, it sounds like the latter fuse may be burned out. take it out and take it to radio Shack for exact replacement.

Posted on Oct 16, 2013

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Posted on Jan 02, 2017

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soundchasr
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SOURCE: NO sound through the AMP even though the power light comes on

Not a fuse. First thing, to check your speaker (amp unplugged, of course), touch the + and - speaker connections to a 9V battery. If you don't hear a pop sound then your speaker is blown. Thus, no output sound. If speaker is OK, then the output IC is your problem.

Posted on Jul 25, 2009

  • 5603 Answers

SOURCE: Deville 212 overdrive channel making Loud humming noise

It sounds like a filter capacitor(s) has failed. The electrolytic caps dry out and cease to perform allowing unfiltered power to reach the preamp sections and get amplified.

Being this is tube with high voltages, an experienced person should work on it due to shock danger.

I assume you checked the tubes for shorts as well as emission since a heater to cathode short could cause this as well.

Posted on Sep 30, 2009

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RixsFixes
  • 2200 Answers

SOURCE: I have a crate PA 8 and it makes a crackling noise

Hi

The problem is with the amplifier itself. Crackling is usually capacitor related and you will need to have the amp checked over to properly identify the cause.

Some amps are also prone to pick up static from other electrical items which can also cause these problems. I had a crackling issue with an old Crate amp of mine which turned out it was due to being too near a computer/monitor so it is worth eliminating these things as a possible cause before having the amp checked.

Hope this helps. Thanks for using FixYa.

Posted on Oct 28, 2009

  • 5603 Answers

SOURCE: Constant hum/buzz only when the distortion is

Distortion is a very HIGH gain operation and any hum on the input will be amplified many times.

Check your guitar AND input cable for ANY hum at all at high gain settings on the amp WITHOUT the pedal in line to assure that the source is not before the pedal.

ADDITIONAL cause could be a poor power adapter for the pedal or even a bad filter cap in the pedal.

Posted on Nov 03, 2009

  • 5603 Answers

SOURCE: Have a Crate V50-112.Have had it for 1 year.

Check for bad tube... it HAPPENS that brand new ones fail... USUALLY if they last 50 hours, they will last for the expected life. The bad tube would likely NOT be the main power tubes, as the amp would still run on one cylinder...

Posted on Feb 02, 2010

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In case of a problem or clarification, don't hesitate to post me a reply.
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Not a fuse. First thing, to check your speaker (amp unplugged, of course), touch the + and - speaker connections to a 9V battery. If you don't hear a pop sound then your speaker is blown. Thus, no output sound. If speaker is OK, then the output IC is your problem.

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