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Crate gx900h I'm looking for a schematic for a crate gx900h guitar amp schematic or how to fix the channel selector switch.

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danforddan1
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SOURCE: amps broken need to fix it

Their may be a schematic on the inside of the amp.I don't remember if Crate puts one or not. And I have had several Crate amps. never needed repair except for tube replacement. If there is not one in side , go here and find what you need . http://www.crateamps.com/support/warranty/ Good luck DFD please rate me TK U

Posted on Apr 19, 2009

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SOURCE: Crate GTX-30 Guitar Amp Schematic... The thing

Hi. use this link to check for the schematics.


crateamps.com/support/discontinued.php

or

music-electronics-forum.com/sitemap/f-60.html.

take care.

Posted on May 31, 2010

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On some amps there needs to be a footswitch inserted in the control jack to activate the effects circuit. Contact Crate to see if that's the case with your amp.
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or

music-electronics-forum.com/sitemap/f-60.html.

take care.

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1 Answer

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NEVER use switch cleaner such as DeOxit on pots !!!!!

I have used CRC226 available at Home Depot electrical dept.

I SUSPECT that the resistance element in that pot is cracked. This is common if the knob sustained a hit. Replacing the pot is the only cure if the element is cracked.

Reviewing the schematic, ALL audio passes through the wiper on the HIGH tone pots. If the wiper is intermittent, so will be the sound.

If your unit is solid state amp, the pot looks like a 10K ohm LINEAR taper.
If you have a tube type, then the pot is a 250K ohm LINEAR.

Note that the other tone pots in the units are AUDIO tapers, but the high is a linear taper.

Get repair parts from either DigiKey.com or Mouser.com

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Hi

Go to www.ezrepair.ca and send it to us.
We will diagnose your unit for free and give you an estimate in a 48H maximum period.

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1 Answer

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Their may be a schematic on the inside of the amp.I don't remember if Crate puts one or not. And I have had several Crate amps. never needed repair except for tube replacement. If there is not one in side , go here and find what you need . http://www.crateamps.com/support/warranty/ Good luck DFD please rate me TK U

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You can try Loud Technologies @ 866-858-5832, techmail@loudtechinc.com.

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1 Answer

Plugging line level into my crate TX15. all inputs sound distort


guitar amps are all set to a low Z resistance configuration. wich are made for guitar only. make sure you are using the right cables.
you need sheilded guitar cable not unshielded speaker cable in many cases these cables look exactly the same. look at your cable look for the words speaker or instrument. you need the instrument cable. if you still have that problem. then you may just not be satisfied with the quality of the amp it self.

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