[Icom] Sick 761

Sat, 19 Apr 2003 09:49:22 -0500

Hi folks,

It is essentially the same on all bands but as I go upwards from 20 M the
power does increase to almost 10 watts.

The test lead trick works the same.

There is no CW, FM or AM at all, just RTTY and SSB. Turning the speech
processor on will kill the SSB output.

        William J. Diamond (Bill)
        Rogers, Arkansas USA
        [email protected]

        Ham Radio Operator WR�T
      Flying The Flag Long Before
            It Was Popular

 Please Visit My Icom Radio Page At

 http://pages.sbcglobal.net/wjdiamond/index.html

-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of Tony Hwang
Sent: Saturday, April 19, 2003 2:44 AM
To: [email protected]
Subject: Re: [Icom] Sick 761

Hi,
Is the symptom same on any and all bands?
Happy Easter,
Tony, VE6CGX

wjdiamond wrote:

>Hi Folks,
>
>Well, I have my new 756 PRO II for the shop now but I keep wondering about
>the 761.  What am I missing on it?
>
>I spent an hour on the phone with Icom Tech support today and based on the
>voltage readings, they said that is should be working but it is not.
>
>For those of you that are familiar with the 761, I am finding something
>really strange. If I touch a metal screwdriver or test lead to either side
>of Diode D 24,on the RF board, the radio will put out 135 watts to the
bird
>and dummy.
>
>All voltages at the diodes are within .2 volts of what the manual and Icom
>says. When looking at the output of J8 with a scope loaded with 50 ohms,
>the output is about .2 volts RMS. Icom says that it should be 2 V RMS.  If
>I use the test lead it goes to 2.2 V RMS.
>
>I have replaced all the diodes and caps  and transistors in the Icom tech
>info sheets and it still puts out about 4 watts.
>
>I am sure it is in the RF board and so is Icom. Short of replacing the RF
>board, neither Icom or I know what else to do.
>
>I am sitting here looking at it now and it is just too nice to use as a
>parts rig.
>
>Does anyone have any suggestions?
>
>Thanks
>
>
>        William J. Diamond (Bill)
>        Rogers, Arkansas USA
>        [email protected]
>
>        Ham Radio Operator WR�T
>      Flying The Flag Long Before
>            It Was Popular
>
> Please Visit My Icom Radio Page At
>
> http://pages.sbcglobal.net/wjdiamond/index.html
>
>
>----
>Your Moderator: Dick Flanagan W6OLD, [email protected]
>Icom Users Net: Sundays, 1700Z, 14.315 MHz
>Icom FAQ: http://www.qsl.net/icom/
>
>
>

----
Your Moderator: Dick Flanagan W6OLD, [email protected]
Icom Users Net: Sundays, 1700Z, 14.315 MHz
Icom FAQ: http://www.qsl.net/icom/