[ICOM] 746

[Kelly Taylor]

Hi Gary,

I don't dispute the Icom tech theory, but what is the usual occurrence when a signal path is shorted to ground? It dies, no?

OP reported not a dead radio when the filter was selected, but zero change in operating parameters. No change in bandwidth, but still receiving as if no filter change had been enacted. 

K

Sent from my iPhone

> On Jan 31, 2016, at 9:58 AM, Gary Fiber <gfiber at comcast.net> wrote:
> 
> The techs at Icom found at times a filter was to tightly pressed into place. The filter case was shorting the actual in /out connections to ground. Pulling the filter out just a little solved the trouble. A more permanent repair was to insulate the bottom of the filter case. This did not happen on all radios but a few we saw this. 
> 
> I have been gone from Icom for coming onto 15 years so tech things are fading a bit these days. 
> 
> Gary P. Fiber 
> gfiber1952 at gmail.com
> gfiber at comcast.net
> 
> 
> 
> 
>> On Jan 31, 2016, at 9:40 AM, Kelly Taylor <ve4xt at mymts.net> wrote:
>> 
>> Wouldn't a bad or shorted filter make the radio sound dead? I tend to go with the reset-turned-off-filter-settings theory. 
>> 
>> Kelly
>> ve4xt 
>> 
>> Sent from my iPhone
>> 
>>> On Jan 30, 2016, at 3:24 PM, Gary Fiber <gfiber at comcast.net> wrote:
>>> 
>>> You might also just gently pull up on the filter. I have seen the filter case short to the mounting holes. Sometimes placing some electrical tape on the filter bottom will prevent it from happening. Could also be a filter that has gone bad.
>>> 
>>> Gary P. Fiber K8IZ
>>> gfiber1952 at gmail.com
>>> gfiber at comcast.net
>>> 
>>> 
>>> 
>>> 
>>>> On Jan 30, 2016, at 2:10 PM, Lloyd Curry <lloyd.na4d at gmail.com> wrote:
>>>> 
>>>> I have an original Icom 746 (non-pro) with the 500 hz cw filter. The
>>>> filter has stopped working. When I push in the filter button the "nar"
>>>> appears on the screen but there is no change in the audio or bandwith.
>>>> Any ideas?
>>>> 
>>>> -- 
>>>> Lloyd C. Curry
>>>> Amateur Radio NA4D
>>>> Greensburg, KY
>>>> 
>>>> I'm so nice I wish I had a friend just like me.
>>>> ----
>>>> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
>>>> Icom Users Net: Sundays, 1700Z, 14.316 MHz
>>>> Icom FAQ: http://www.qsl.net/icom/
>>>> To support QSL/QTH.net: http://www.qsl.net/donate.html
>>> ----
>>> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
>>> Icom Users Net: Sundays, 1700Z, 14.316 MHz
>>> Icom FAQ: http://www.qsl.net/icom/
>>> To support QSL/QTH.net: http://www.qsl.net/donate.html
>> ----
>> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
>> Icom Users Net: Sundays, 1700Z, 14.316 MHz
>> Icom FAQ: http://www.qsl.net/icom/
>> To support QSL/QTH.net: http://www.qsl.net/donate.html
> ----
> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> Icom FAQ: http://www.qsl.net/icom/
> To support QSL/QTH.net: http://www.qsl.net/donate.html