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G530 TX Issue

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longg(at)pjm.com
Guest

Posted: Tue Dec 07, 2010 11:03 am Post subject: G530 TX Issue

My Garmin 530 is having an issue transmitting.   

   

<![if !supportLists]>1.       <![endif]>When I click on the PTT button the TX light comes on the Garmin and my test handheld radio goes silent as to receive the voice. No voice is transmitted/heard. I have to really speak up to hear myself talking when I press the button.  

<![if !supportLists]>2.       <![endif]>My other 2 com radios work perfectly.  

<![if !supportLists]>3.       <![endif]>Also when transmitting the Audio COM1 button blinks and recognizes the transmission.  

<![if !supportLists]>4.       <![endif]>The vol/sql knob appears to work as advertised.  

   

Ideas appreciated.  

   

Thanks  

     

Glenn E. Long  

  

      [quote][b]

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tperry(at)lvtofly.com
Guest

Posted: Tue Dec 07, 2010 11:22 am Post subject: G530 TX Issue

Had my 430 do the same thing.  Had to send it to garmin, they ended up replacing the two boards.  I have talked to several others have similar failures on the 430 and 530.  For the 430 it was flat rate repair of $800.

Tim





On Dec 7, 2010, at 1:30 PM, <longg(at)pjm.com (longg(at)pjm.com)> wrote:



[quote]    

My Garmin 530 is having an issue transmitting.   

   

1.       When I click on the PTT button the TX light comes on the Garmin and my test handheld radio goes silent as to receive the voice. No voice is transmitted/heard. I have to really speak up to hear myself talking when I press the button.  

2.       My other 2 com radios work perfectly.  

3.       Also when transmitting the Audio COM1 button blinks and recognizes the transmission.  

4.       The vol/sql knob appears to work as advertised.  

   

Ideas appreciated.  

   

Thanks  

     

Glenn E. Long  

  

       	  Quote: 	
		  



	


[b]

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ceengland(at)bellsouth.ne
Guest

Posted: Tue Dec 07, 2010 1:39 pm Post subject: G530 TX Issue

On 12/7/2010 12:30 PM, longg(at)pjm.com (longg(at)pjm.com) wrote:      	  Quote: 	
		                                                    1024x768   <![endif]-->     Clean               false   false   false      EN-US   X-NONE   X-NONE                                         MicrosoftInternetExplorer4                                                   <![endif]-->                                                                                                                                                                                                                                                                                                                                                                                                                                <![endif]-->            /* Style Definitions */   table.MsoNormalTable 	{mso-style-name:"Table Normal"; 	mso-tstyle-rowband-size:0; 	mso-tstyle-colband-size:0; 	mso-style-noshow:yes; 	mso-style-priority:99; 	mso-style-qformat:yes; 	mso-style-parent:""; 	mso-padding-alt:0in 5.4pt 0in 5.4pt; 	mso-para-margin:0in; 	mso-para-margin-bottom:.0001pt; 	mso-pagination:widow-orphan; 	font-size:10.0pt; 	font-family:"Times New Roman","serif";}  <![endif]-->   <![endif]-->       <![endif]-->                

My Garmin 530 is having an             issue transmitting.          

          

1.                     When I click on the PTT             button the TX light comes on the Garmin and my test handheld             radio goes silent             as to receive the voice. No voice is transmitted/heard. I             have to really speak             up to hear myself talking when I press the button.         

2.                     My other 2 com radios             work perfectly.         

3.                     Also when transmitting             the Audio COM1 button blinks and recognizes the             transmission.         

4.                     The vol/sql knob appears             to work as advertised.         

          

Ideas appreciated.         

          

Thanks         

                     

Glenn E. Long

                    

       

     	
     A friend had the same symptom with a factory new 430. Swapped into     another a/c & it worked fine; bad again in his plane.

     

     After perusing the wiring diagrams for days and contacting Garmin     tech help & detailing every single pin that had wire (tech said     it was wired correctly), he finally took it to a local avionics     shop. They took one look at the back & told him he was missing     one of the grounds (sorry; don't remember which one). 

     

     The harness was built by the vendor where he bought the radio.

     

     Remember that even if it worked for a while, pins can back out of     the housing if they are defective, or if they were not fully seated     when they were installed.

     

     Charlie

      [quote][b]

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longg(at)pjm.com
Guest

Posted: Wed Dec 08, 2010 5:08 am Post subject: G530 TX Issue

Thanks everyone – I’ll give these ideas a go.  

   

Do Not Archive  

     

Glenn E. Long  

  

       

From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Charlie England

 Sent: Tuesday, December 07, 2010 4:36 PM

 To: aeroelectric-list(at)matronics.com

 Subject: Re: G530 TX Issue  

  

  

   

On 12/7/2010 12:30 PM, longg(at)pjm.com (longg(at)pjm.com) wrote:   

My Garmin 530 is having an issue transmitting.   

   

When I click on the PTT button the TX light comes on the Garmin and my test handheld radio goes silent as to receive the voice. No voice is transmitted/heard. I have to really speak up to hear myself talking when I press the button.  

My other 2 com radios work perfectly.  

Also when transmitting the Audio COM1 button blinks and recognizes the transmission.  

The vol/sql knob appears to work as advertised.  

   

Ideas appreciated.  

   

Thanks  

     

Glenn E. Long  

  

A friend had the same symptom with a factory new 430. Swapped into another a/c & it worked fine; bad again in his plane.

 

 After perusing the wiring diagrams for days and contacting Garmin tech help & detailing every single pin that had wire (tech said it was wired correctly), he finally took it to a local avionics shop. They took one look at the back & told him he was missing one of the grounds (sorry; don't remember which one). 

 

 The harness was built by the vendor where he bought the radio.

 

 Remember that even if it worked for a while, pins can back out of the housing if they are defective, or if they were not fully seated when they were installed.

 

 Charlie   	  Quote: 	
		    	
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hooverra

Joined: 18 Jan 2009
Posts: 11
Location: The Plains, Virginia

Posted: Thu Dec 09, 2010 6:10 pm Post subject: Re: G530 TX Issue

Glen,

You didn't say if it ever worked. From the symptoms you present it would appear to be the mic audio connection from the audio panel to the to the 530.



Other com working says the mic and audio input is OK.

The TX indicator and breaking squelch on the Hand Held Radio says the Mic Key and transmitter are working. You could have a defective Audio panel output or 530 Mic input but it is more likely a connection issue. Use a couple of pins crimped to a pair of stiff wires so you can probe the tray connectors and check continuity of both the Mic high and Mic Return lines. You will probably find A. A pin in the wrong place, B. A pin retracted from the connector, C. A bad crimp or D. A broken wire. 

   I had a similar symptom on an RV-10 with a 430 it was A pin in the wrong position. If it ever worked then I would suspect B



Good luck

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_________________
Ralph & Laura Hoover
RV7A N527LR

longg(at)pjm.com
Guest

Posted: Fri Dec 10, 2010 6:23 am Post subject: G530 TX Issue

Ralph,



Thanks for the tips. As far as I know it worked earlier this year. Since

I've been building I've not really used it for talking, just listening.

It also came back with a clean bill from a shop bench test. Of course

that doesn't guarantee anything.



I am using the Approach Stack bus so I'll check the connections and

re-seat everything too. They made the cables. Someone else mentioned to

check the case ground for continuity. Now that you mentioned Mic High, I

think Approached used a blue wire to represent that pin. It was either

High or Low that was supposed to go to ground?



Glenn E. Long



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