[ICOM] No power out in FM mode on an IC-706MKIIG

[Phil Krichbaum]

A techie type sent me the  way to measure the voltage and fix it but it 
was way beyond my abilities and resources and that was many moons ago. 
Since I had some perfectly good 2M FM rigs I used in the vehicle, I 
never saw a need to fix the FM problem with the early 706 and sold it as 
is. I've not seen the problem with my MKIIG but I don't use it on FM either.
    Phil N0KE

J.Gordon Beattie, Jr., W2TTT wrote:
> Phil,
> Ah ha!  That seems to make sense given the symptoms.  I'll check into that.
>
> Anyone have any pointers on where I can locate and measure the VCO voltage
> or the FM modulator?
>
> Thanks & 73,
> Gordon Beattie, W2TTT
> 201.314.6964
>
>
> -----Original Message-----
> From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
> Behalf Of Phil Krichbaum
> Sent: Wednesday, May 05, 2010 4:37 AM
> To: ICOM Reflector
> Subject: Re: [ICOM] No power out in FM mode on an IC-706MKIIG
>
>     I had this problem with my original plain 706 and it was the wrong 
> voltage on the VCO for FM after the rig logged some miles. Since I never 
> used the rig on FM, I never fixed it before I sold it. Apparently it was 
> a common problem with the original 706.
>     Phil N0KE
>
> J.Gordon Beattie, Jr., W2TTT wrote:
>   
>> Gary,
>> Yes, even key down on CW or RTTY.  I'm wondering if there is something
>>     
> about
>   
>> the frequency modulator.
>>
>> Thanks & 73,
>>
>> Gordon Beattie, W2TTT
>>
>> 201.314.6964
>>
>> -----Original Message-----
>> From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net]
>>     
> On
>   
>> Behalf Of Gary P. Fiber
>> Sent: Wednesday, May 05, 2010 3:22 AM
>> To: ICOM Reflector
>> Subject: Re: [ICOM] No power out in FM mode on an IC-706MKIIG
>>
>> Seems to me it was the FM VCO unlocking when this happened. You still 
>> have SSB or CW power out on all bands?
>>
>> Gary K8IZ
>>
>> On 5/4/2010 8:13 PM, J.Gordon Beattie, Jr., W2TTT wrote:
>>   
>>     
>>> Hi Folks!
>>> I was wondering if anyone has seen an issue of no power output when in FM
>>> mode no matter what the band or power level?  The internal meter spikes
>>>     
>>>       
>> for
>>   
>>     
>>> a fraction of a second and then there is no output.  It does not happen
>>>       
> in
>   
>>> any other mode and does happen with a dummy load and a 1:1 match.
>>>
>>> The power supply voltage is steady.
>>>
>>>
>>>
>>> Any ideas?
>>>
>>>
>>>
>>> Thanks&  73,
>>>
>>> Gordon Beattie, W2TTT
>>>
>>> 201.314.6964
>>>
>>>
>>>
>>>
>>> __________ Information from ESET Smart Security, version of virus
>>>     
>>>       
>> signature
>>   
>>     
>>> database 5086 (20100504) __________
>>>
>>>
>>> The message was checked by ESET Smart Security.
>>>
>>>
>>> http://www.eset.com
>>>
>>>
>>> __________ Information from ESET Smart Security, version of virus
>>>     
>>>       
>> signature
>>   
>>     
>>> database 5086 (20100504) __________
>>>
>>>
>>> The message was checked by ESET Smart Security.
>>>
>>>
>>> http://www.eset.com
>>>
>>>
>>>
>>> __________ Information from ESET Smart Security, version of virus
>>>     
>>>       
>> signature
>>   
>>     
>>> database 5086 (20100504) __________
>>>
>>> The message was checked by ESET Smart Security.
>>>
>>> http://www.eset.com
>>>
>>> ----
>>> 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
>>  
>>
>> __________ Information from ESET Smart Security, version of virus
>>     
> signature
>   
>> database 5086 (20100504) __________
>>
>> The message was checked by ESET Smart Security.
>>
>> http://www.eset.com
>>  
>>  
>>
>> __________ Information from ESET Smart Security, version of virus
>>     
> signature
>   
>> database 5086 (20100504) __________
>>
>> The message was checked by ESET Smart Security.
>>
>> http://www.eset.com
>>  
>>
>> ----
>> 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
>  
>
> __________ Information from ESET Smart Security, version of virus signature
> database 5086 (20100504) __________
>
> The message was checked by ESET Smart Security.
>
> http://www.eset.com
>  
>  
>
> __________ Information from ESET Smart Security, version of virus signature
> database 5088 (20100505) __________
>
> The message was checked by ESET Smart Security.
>
> http://www.eset.com
>  
>
> ----
> 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
>
>