[ICOM] Oh NO!!!!

[Joe Perge]

This has happened to my 703+, twice! It's time to try an Elecraft for the
first time!
Joe, WB8HWF

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Stephen Budensiek
Sent: Wednesday, April 25, 2012 12:08 PM
To: ICOM Reflector
Subject: Re: [ICOM] Oh NO!!!!

Phil,
   I can't answer for the newer rigs.  But it is there in all flavors of the
756, ie the original 756, the Pro, the Pro2, and the Pro3.
Someone commented it was also present in the 746 (I've never owned one).
Also can't tell you about the newer rigs.  I find it interesting as a
engineering tech that it avoids the finals (should be first thing in the
chain from the antenna port on the tx side, and goes to the drivers).  Not
sure how that is done.

73's de Stephen, K0SD

***************************************

On Wed, Apr 25, 2012 at 11:27 AM, Phil Krichbaum <vailphil at sopris.net>
wrote:
>     I'm not sure if you mean 756 PRO, PRO II or PROIII. I know from 
> first hand experience that the PRO II and PROIII suffer this problem 
> too easily (IMHO) from ESD (electrostatic discharge). I had a new in 
> the box PRO III and in the first hour after I took it out of the box 
> during which I made two QRP QSOS and one at 100w, the TX power went to 
> almost zero. At the time there was not one cloud in the sky, no wind 
> etc. The failure was some FETs and diodes in the tuner and it was only 
> after a few phone calls Icom agreed to cover the repair under 
> warranty! My antennas have less than 2:1 SWR.
>     Another time I had a close lightening strike and my PROII was not 
> connected to an antenna and was off. It was off as was the Icom PS it 
> was connected to but it was plugged into the AC mains. The PROII was 
> totaled but I still use the same PS years later and it had no 
> problems. Several other items were damaged/destroyed (TV, answering 
> machine, computer, well pump relay) and it seems the damage came in 
> the neutral side of the AC 117 line. I've since had the power company 
> install a "meter treaters" on my electric meters and I've had no 
> further problems even after a direct hit on the over head feed to the 
> house last summer but your results may vary. I'm not then lone ranger 
> with this type of Icom 756 problems and have no clue if it has been 
> taken care of with the newer Icom rigs.
>     Phil N0KE
>
>
>
>
> 4/19/2012 12:22 PM, bonddaleena at aol.com wrote:
>> Hi. I've been a reader of this site for quite some time. Last summer, I
took a 'close by' lightning hit. Flash and noise at same instant. I went
into the house and found a bunch of stuff damaged. I suspect it hit a nearby
AC line due to the following:
>> It took out both of my rotor control boxes, Astron 50 Amp supply, TV, my
70 cm preamp, on a different tower, etc.
>> I checked my favorite radio, my 756PRO, that I hand carried back from
Tokyo when they first came out. It is connected to a PS-55 which is plugged
into a large surge protector. Seemed OK.
>> Yesterday, I went to call someone on 6M and noticed NO output. The
receiver is fine.
>>
>> ALL antennas were disconnected as usual, when not in use and the coax 
>> pigtails were grounded. (I use hardline for most of my antennas}
>>
>> - no output on any band
>> - ant OK
>> - tried dummy load
>> - used several different wattmeters
>> - 'scope shows normal voice patterns
>> - Po, SWR, etc non functional
>> - tried master reset. no good.
>>
>> So, before I take a peak inside, any suggestions? I'd like to fix it
myself, if possible.
>>
>> This is strange because my mint 745 next to it did the same thing a few
years ago. I haven't bothered to even look at the 745 because the receiver
is also fine. I use it with receiving converters.
>>
>> Thank you!!!
>>
>> ron
>> N4UE
>> ----
>> 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
>>
>>
>> -----
>> No virus found in this message.
>> Checked by AVG - www.avg.com
>> Version: 2012.0.2126 / Virus Database: 2411/4947 - Release Date: 
>> 04/19/12
>>
>>
> ----
> 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