[ICOM] 746pro

[Mike - RR]

Good find!

The nuts are usually sealed with a drop of blue/green paint.  Yours may have
missed that or maybe it chipped off.

Might I suggest Lock-Tite 242 (blue).  It comes off with common tools.  271
(red) needs to be heated - not a good thing to do to a plastic mic.


Mike - KD9KC.
M.A.R.I.E.
El Paso, Tx. 

www.w5dpd.org
 

> -----Original Message-----
> From: icom-bounces at mailman.qth.net 
> [mailto:icom-bounces at mailman.qth.net] On Behalf Of JV
> Sent: Friday, December 22, 2006 6:54 PM
> To: Z Icom
> Subject: [ICOM] 746pro
> 
>  
>  
>  
> 746pro Mike Follow up. 
>  
> Hi Willy 
>     Tks for pointing me in the right direction. Looked at the 
> mike cord connector that goes to the front panel. Wires were 
> OK. Had to drill the head off one screw on the connector 
> collar. Would not come off with correct Allen head screw driver. 
>     Open mike shell up and found no wires out of place. Gave 
> the mike a sharp rap and it sounded like a baby rattler. The 
> brass nut inside the case that is used to hold the mike 
> hanger had come loose and had been wedged some where under 
> the circuit board. Removed circuit board and put brass nut in 
> its compartment and fasten mike holder. Assembled mike and 
> plugged into radio's front panel. Hum is gone. In my opinion 
> the brass nut should be staked or sealed in its compartment 
> so that it can't come out in case the hanger screw backs out. 
> A drop of locktite (spl) will work also. 
>     This may be a one of a kind but I would suggest all to 
> check the hand mike hanger screw for tightness on all Icom radios. 
> Happy Holidays
> JV 
>  
> -------Original Message------- 
>  
> From: JV
> Date: 12/21/06 16:59:12
> To: Z Icom
> Subject: Fw: Re: [ICOM] 746pro 
>  
>  
>  
> Hi Willy
> That makes sense, I'll run over to Fred's in the morning and 
> take a look. 
> Also, I'll take my mike off the 756pro and try that. Should 
> have done that today. Good old hind sight. 
> JV 
>  
> -------Original Message------- 
>  
> From: K3vw at aol.com
> Date: 12/21/2006 4:40:33 PM
> To: icom at mailman.qth.net
> Subject: Re: [ICOM] 746pro 
>  
> I've got the same problem with my 746PRO. It is the mic 
> connector on the radio. Check to see if the connector is 
> loose or has been loose and has broken a wire on the inside 
> of the connector , which has a little circuit board on it
> 
>  
> When I dis-connected the collar from touching the radio part 
> of the connector, everything is great !! The problem is the 
> radio mic connector. 
> Willy K3VW
> 919-965-8930
> ----
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