[ICOM] 75 PRO III Smoked!

[Al Waschka]

If you are talking about when they changed the hf pa I read it was 32045xxx. Google for "the Icom page" and check the 756 proiii tab

Al K5TAN

On Feb 21, 2012, at 3:26 PM, "rrocket88 at netzero.net" <rrocket88 at netzero.net> wrote:

> Anyone know the Serial number break between what is considered Early  / Late production PRO III ???  It would be nice to know.
> I Love my Pro III  
> 
> 73, Randy K4IMZ
> 
> ---------- Original Message ----------
> From: Stephen Budensiek <kzerosd at gmail.com>
> To: ICOM Reflector <icom at mailman.qth.net>
> Subject: Re: [ICOM] 75 PRO III Smoked!
> Date: Tue, 21 Feb 2012 08:52:33 -0500
> 
> I just checked.   They have the early IC-756Proiii service manual, but
> not this later one.  I'll see if I can figure out where I got it from.
> 
> 73's de Stephen, K0SD
> 
> **************************************************
> 
> On Tue, Feb 21, 2012 at 8:08 AM, Jim n4uoz <n4uoz at bellsouth.net> wrote:
>> here is the site for service manuals   http://www.mods.dk/
>> 
>> --
>> Jim Sherwood,  N4UOZ
>> n4uoz at arrl.net
>> 
>> 
>> 
>> 
>> On 2/21/2012 4:30 AM, Stephen Budensiek wrote:
>>> Jay,
>>>     Don't know if this will be of any interest to you, but I found a
>>> IC-756ProiiiServiceManual2007.pdf somewhere on the internet, don't
>>> remember where.   Just checked it, it shows the drivers as being
>>> RD15HVF-1 FETs.   It a full service manual, with parts, layouts,
>>> voltages, it's a 29 mb file in a zip, that you can unzip into a pdf
>>> file.   I was looking at a Pro3, wanted to see what I could find, and
>>> found this, along with a earlier Proiii service manual.   It may have
>>> been the German site that has lot of Icom and other stuff on it, but
>>> can't remember for sure.   It has a very long file name, something
>>> like "IC-756PRO3_Service_manual_REVISED_June_2007 at magfmegfld.zip"  on
>>> the download site.   Wouldn't mind sending it to you, but not sure how
>>> I could upload a 29 meg file via my email, think Gmail limits me to
>>> something like 8 meg.   Let me know if I can help you.
>>> 
>>> 73's de Stephen, K0SD in So FL
>>> 
>>> **************************************
>>> 
>>> On Mon, Feb 20, 2012 at 7:21 PM,<jkolin at optonline.net>  wrote:
>>>> I have a late production unit. It has the newer PA Board using MOSFETS as drivers and finals.
>>>> 
>>>> 3 Days ago I was checking SWR on a new ant. 2/1. Key down w/100W for about 10 seconds. After a few SWR measurements power dropped to 5 W max. Then I could not go into transmit mode. After about a minute in receive mode, smoke billowed out of the rear panel from the PA compartment.
>>>> 
>>>> Removed top covers and found 3 burned SMD resistors. R38, R39&  R40.  4.7 ohm. All 3 are in parallel.
>>>> 
>>>> Anyone have problems with this newer PA board? I have not been able to find parts layout drawing that applies to this new PA board.
>>>> 
>>>> Thanks for all your thoughts.
>>>> 
>>>> Jay....
>>>> ----
>>>> 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
> 
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> ----
> 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