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amp noise


 
1/4/2006 9:58 PM
alex
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amp noise
im not that smart with amps. but my friend tried linking amps and accidently plugged the two speaker puts together. and now all it does is hum no matter the volume. i'd appreciate any comments on whats wrong and how to fix it. thanks.
 
1/5/2006 7:52 AM
KB
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What kind of amp is it ? tube vs transistor ? Make model  
 
KB
 
 
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1/5/2006 12:24 PM
rooster.
First off, "linking" amps is a big no-no. Secondly, "linking" amps is a big no-no. Were I you, I'd post my location, and see if anyone on the board does amp repair. And, keep your friend away from your amps in the future.  
 
rooster.
 
1/5/2006 12:58 PM
g1
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If you're real lucky, a ground trace blew out. If not, the whole power amp section could be blown.  
Is the other amp still working?  
If you meant what you said "im not that smart with amps", you shouldn't be fixing this one yourself.
 
1/5/2006 11:11 PM
alex
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the other amp does the same thing. Im very capable of fixing im just not familiar with solving the problem of what needs to be fixed.  
its a crate GX-15 just a practice amp its all i have so i was trying to salvage it. thanks.
 
1/6/2006 12:19 AM
Enzo
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Oh, the little practice amps are all pretty much the same, and I would be very surprised if all that was wwrong with it was a blow output chip.  
 
Is there a five leg TO220 on the heat sink? Number TDA2040 (or 2030)? I bet it is shot and is putting DC on the speaker.
 
1/6/2006 12:32 AM
alex
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yeah its there. thanks ill replace tommorrow and respond. thanks alot for your help.
 
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