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I need a schematic diagram for a CRATE FX30 amplifier but i cant find it no where. Any help plz

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No i need a schematic layout because Im soldering in some enhancements to make it wireless i really need a schematic layout

Posted on May 17, 2014

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Posted on Jan 02, 2017

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SOURCE: Schematic Diagram

I don't have a schematic but I have photos of that amp. What part do you need to identify?

babin_perry@yahoo.com

Posted on Jul 23, 2009

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Real basic owners manual is here:
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Need a schematic diagram


I'd love to help, but without the make amd model, there is little I can do. Please update this with that info.

Also, just in case the schematic isnot available, please list the circuit designations of the parts that are burnt. These are the numbers listed under or next to the parts on the circuit board.


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Intermittent shorts in a Crate Limo TX50DE Guitar


turn that ****** on and get a can of freeze spray. coming and going type issues is usually related to a failing electrolytic capacitor. there may also be a bad mosfet, rectifier, diode, etc. i would be suspect to caps. schematics probably only available thru crate and you have to pay a couple bucks, but trust me its worth the couple bucks spent and having it on its way than wasting hours online not getting anywhere. by the way i checked my sources and came up with nada.
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I have a crate BX 160 that shuts down at the point where it starts limiting and then after a about 30 seconds. it starts back up. I would like to get a schematic on this particular piece of equipment...


I just saw your post. I happen to have a Crate BX-160 and was able to call Crate in St. Louis and talked with a tech there at the plant and he actually sent me full schematics for free.

Your problem, based on my electrical background and fixing audio equipment for 10 years, seems to be related to the built-in limiter in the power transformer. In other words, you might just need a new power transformer and it is a piece of cake to install (all push-on connections).

The schematic will show you the many test points for voltage checks, but unless you know what you are looking for, its just information overload. It is a rather simple amplifier and built resonably well. I have been using mine since 2003 and have fixed it a few times (age related problems like loose connections). There just is not much to go wrong on them except for the fact the amp is subjected to extream vibration. THis causes physical connections to fail resulting in vexing issues that are hard to solve. This is not unique to this amp (all bass amps).

I would bet anything your problem is the power supply shut-down circuitry is malfunctioning. In my expereience with amps, unless the amp is drawing current (failing power circuitry) and making strange sounds, the failure is usually not related to the power section failing (like power transformers going out). Likely, the built in limiter is the problem.

I hope this helps!

-mike
(development engineer)

Jan 20, 2009 | Audio Players & Recorders

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