[ICOM] ICOM 703 No TX After Factory Driver Mod

[Bert Morton]

Thanks Rick,

I didn't see your post.I have a pretty agressive spam filter (postini)so I 
bet it's there.

In any event thanks for resending it.

Bert
----- Original Message ----- 
From: "Rick Robinson" <w8zt at suddenlink.net>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Monday, March 03, 2008 8:17 AM
Subject: [ICOM] ICOM 703 No TX After Factory Driver Mod


> Here is my post in case you deleted it. Good luck with it Bert. 73, Rick.
>
> Rick Robinson wrote:
>> I had concerns about the no power out problem and it was the year after 
>> the 703 was out that I asked some friends at the Icom booths at Dayton to 
>> tell what was up with it. I brought my 703+ in to them and they showed me 
>> about the driver bias adjust. There was also a board change on the early 
>> non plus 703's that they told me about. Anyway when I got back from 
>> Dayton I was the one to post the driver adjust mod. Depending on when you 
>> sent it in for the update you may have received the early fix, which was 
>> the bias adjust after 15 seconds of keydown. Much later on came the 
>> reduction in voltage as there were still some problems. It is possible 
>> yours was sent in before the voltage mod. If I were you I would look up 
>> the voltage mod and study the pics and then have the rig in front of the 
>> screen or a photo of the cut traces on the board and see if this had 
>> actually had been done. This may be the cause of your failure. If the 
>> voltage mod has been done then chalk it up to something unknown and fix 
>> it and try again. Most likely you won't have another failure. I hope this 
>> helps and good luck, Rick.
>>
>> ----