[ICOM] Icom 756 and ESD

paul glassman highschooldiving at yahoo.com
Sun May 6 12:38:15 EDT 2012 

Same problem with the 7700s. I walked across the carpet, touched the vfo and poof....  the encoder died a pitiful quiet death. 
                                                                                                                                                 Paul w8jn
 
Quantum materiae materietur marmota monax 
si marmota monax materiam possit materiari?


________________________________
 From: Larry Young <k4lxv at bellsouth.net>
To: ICOM Reflector <icom at mailman.qth.net> 
Sent: Sunday, May 6, 2012 12:25 PM
Subject: Re: [ICOM] Icom 756 and ESD
 
Perhaps the following will add some perspective;
http://www.nypartnersinoralhealth.com/aboutus/poem.html
Which view will each of us take?
Larry K4LXV

--- On Sun, 5/6/12, Mike Olbrisch <mike-2007 at elp.rr.com> wrote:

From: Mike Olbrisch <mike-2007 at elp.rr.com>
Subject: Re: [ICOM] Icom 756 and ESD
To: "'ICOM Reflector'" <icom at mailman.qth.net>
Date: Sunday, May 6, 2012, 9:31 AM

Same here.  A few years ago I was thinking of dumping the aging 781 for a
PRO-III or newer.  A rather prominent ICOM individual advised me against it.
I listened.  The IC-781 and the Timewave DSP-599zx are good enough.  Really,
how much more is there to hear on HF?

The more I hear thses stories, the more I am glad I listened.

Vy73 - Mike - KD9KC.
El Paso, Texas - DM61rt.
W5-SOTA Association Manager.
NA-SOTA info: http://na-sota.org/




-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Joe K I 5 F J
Sent: Sunday, May 06, 2012 07:20
To: ICOM Reflector
Subject: Re: [ICOM] Icom 756 and ESD

I guess I have been very lucky.
My 22 Yr Old IC-725, IC-746 Vanilla Version and IC-756Pro3 have not
suffered.
I discharge my self to ground prior to connecting antennas and powering up
the shack.
 
The antenna designs are DC grounded.
I think the secret to success is a antenna that discharges static build up
before it reaches dangerous levels.
I use a very old TH-3 Beam, a 160-M Sky-Loop,
a 80-M Sloping Delta-Loop and a DC grounded 50 Ft Vertical.
 
73
Joe O
NNNN


________________________________
From: C.Whitaker <whitaker at pa.net>
To: icom at mailman.qth.net 
Sent: Sunday, May 6, 2012 5:07 AM
Subject: Re: [ICOM] Icom 756 and ESD
  
de Clete
define "well known".  I don't.
73  WB2CPN
++++++++++++++++++++++++++

On 5/4/2012 8:57 PM, Jim Vohland wrote:
> I would wager that the number of failures in the 746 Pro line are a
closely guarded secret. It is well known the failure issues with that rig,
above and beyond any other model. Whenever I talk to someone on the air that
uses a 746 pro, I always ask about any issues. It is very rare to find
someone that has never had an issue. Once again, nothing scientific but
personally I have talked to approx 50 owners who have experienced failures
and 7 who have not. Yes I did keep track. I concur with your evaluation of
the tolerance of solid state electronics but the 746 is in a class of its
own.
>
>
>
>
>> Date: Fri, 4 May 2012 17:52:20 -0700
>> From: k4lxv at bellsouth.net
>> To: icom at mailman.qth.net
>> Subject: Re: [ICOM] Icom 756 and ESD
>>
>> To All; I am almost willing to wager that most every brand of amateur
solid state tadios have their share of issues associated with ESD and every
nature of spikes that could cause damage. It is the nature of solid state
electronics to be less tolerant when the parameters of solid state devices
are exceeded. I have owned solid state radios for the last 35 years and have
never lost a front end or PA module ever. I have had power supply failures.
We all know that power supplies are not that efficient and generate the most
power loss and heat.
>>     I question if anyone knows the percentage of ownership of the various
brands of radios. Does anyone have this data? This is how we can best
determine the failure rate of a particular brand and model radio.
>> Larry, K4LXV
>>
>> --- On Fri, 5/4/12, John G.<af5cc at fidmail.com>  wrote:
>>
>> From: John G.<af5cc at fidmail.com>
>> Subject: Re: [ICOM] Icom 756 and ESD
>> To: "ICOM Reflector"<icom at mailman.qth.net>
>> Date: Friday, May 4, 2012, 5:01 PM
>>
>> Thanks for the info. Hope that is the case.  I have a friend who just had
a
>> 746 original die.Turned it on one day and it wouldn't transmit any power.
I
>> didn't know the 746 original had that problem as well..  Can't say that I
>> have ever seen a review of the 756 original that mentioned this problem.
>> Hoping to get one soon.
>>
>> John AF5CC
>>
>> ----- Original Message -----
>> From: "Jim Vohland"<n9vo at hotmail.com>
>> To:<icom at mailman.qth.net>
>> Sent: Friday, May 04, 2012 8:34 PM
>> Subject: Re: [ICOM] Icom 756 and ESD
>>
>>
>>>
>>> I don't have scientific data to go by but personally I don't know anyone
>>> with a 756 that ever had an issue. Now in contrast to that, I personally
>>> had 2 746 pro's die, and also have 3 friends with 746's that died.
>>> Additionally I have talked with many hams on the air that suffered 746
pro
>>> deaths.
>>>
>>>
>>>
>>>> From: af5cc at fidmail.com
>>>> To: icom at mailman.qth.net
>>>> Date: Fri, 4 May 2012 18:12:58 +0000
>>>> Subject: [ICOM] Icom 756 and ESD
>>>>
>>>> Last month there was quite a discussion on this reflector about the
Icom
>>>> 756PRO series, 746PRO, and 703 being damaged by ESD, and made it sound
>>>> like they are overly sensitive to this phenomenon. Is the 756 original
>>>> also overly succeptable to static discharges, or did the problem start
>>>> with later models?
>>>>
>>>> 73 John AF5CC
>>>> ----
>>>> 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
>                           
> ----
> 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
----
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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