Discuss Nava construction and related issues
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				- Posts 145
- Joined: May 28th, '15, 13:01
 
 
 
			
				
					
					
												
						
						Croodey wrote:.. only tone and snappy doesn't. 
 
Sounds like a tom?
 
That's because your noise doesnt work right.  It should be a wall of noise when you scope it 
 
 
 
 
			
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				- Posts 66
- Joined: Jun 15th, '16, 17:22
 
		
 
		
			
				
					
					
												
						
						I look tomorrow for the noise. 
 
 
Maybe it will helps. But i think it is not the problem,  why the BA6110 is heating.
 
			 
				
			 
					 
	
		
		
			
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				- Posts 145
- Joined: May 28th, '15, 13:01
 
		
 
		
			
				
					
					
												
						
						probably separate issues.  
Sort out the short first, then deal with the noise
				 
			 
				
			 
					 
	
		
		
			
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				- Posts 96
- Joined: May 18th, '16, 20:15
 
		
 
		
	
		
		
			
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				- Posts 145
- Joined: May 28th, '15, 13:01
 
		
 
		
			
				
					
					
												
						
						Not sure if he had a bad one or he actually fried it.  I've seen a bunch of bad ones building x0xb0xes. They are old parts and who knows how they were stored.  If its getting hot, it shorting, no doubt about that.  I've never seen a failure like that with real parts.  
Where did the replacements come from? A fake part would cause that
				 
			 
				
			 
					 
	
		
		
			
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				- Posts 66
- Joined: Jun 15th, '16, 17:22
 
		
 
		
			
				
					
					
												
						
						ok @altitude, my noise doesn´t work realy. but yes, i was thinking, the signal is verry low - but ok, i wasn´t sure. 
now the ic33 is with one of the 14006 this low noise you see, and if i change the 2 ic´s, the other on ic33 have on pin9 15v.
now i wait for new, and look for other bugs 
 
thank you!
 
			 
				
			 
					 
	
		
		
			
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				- Posts 66
- Joined: Jun 15th, '16, 17:22
 
		
 
		
			
				
					
					
												
						
						Done!
Thank you! This part is also fixed now. It was only a bug in the noise part what was killing my BA6110.
				 
			 
				
			 
					 
	
		
		
			
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				- Posts 66
- Joined: Jan 6th, '14, 09:19
 
		
 
		
			
				
					
					
												
						
						Had to replace fried BA6110 on one of the Nava's I'm building as well to get clap working -- think it was due to legs of C61 contacting against D53 on the component side of the board, tight fit right there..
				 
			 
				
			 
					 
	
		
		
			
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- Joined: Feb 25th, '17, 18:41
 
		
 
		
			
				
					
					
												
						
						A bit of a topic hijack, but Croodey, could you please tell me how you fixed your noise part problem?
I only have a very small noise signal on pin 9 of IC33, and on this pin I also measure a +15VDC offset.. Pin 8 is also +15VDC, but this is the IC Vcc supply so this is correct.  No components are getting hot fortunately, and the power supply +5V +15V -15V is okay as well..
Could it be a faulty 4006 IC?
				 
			 
				
			 
					 
	
		
		
			
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				- Posts 373
- Joined: Aug 8th, '16, 16:36
 
		
 
		
			
				
					
					
												
						
						Bob1991 wrote:A bit of a topic hijack, but Croodey, could you please tell me how you fixed your noise part problem?
I only have a very small noise signal on pin 9 of IC33, and on this pin I also measure a +15VDC offset.. Pin 8 is also +15VDC, but this is the IC Vcc supply so this is correct.  No components are getting hot fortunately, and the power supply +5V +15V -15V is okay as well..
Could it be a faulty 4006 IC?
I'm not Croodey, but yes - a faulty 4006 can definately be the reason...