[Icom] 761 Questions
wjdiamond
[email protected]
Sun, 6 Apr 2003 20:23:37 -0500
What I have found so far.
The RF out adjust post on the main board does not have any effect on the PO
I checked the idle current on the drivers and they were set to almost 500
MA, and they should be at 100 MA per the service manual. As I lower the
current the PO drops to 0 at 240 MA and it will not adjust any lower.
The finals are not running hot at all and there is 13.8 VDC to them. I am
still checking...
This will be a learning experience
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 New Icom Radio Page
http://pages.sbcglobal.net/wjdiamond/index.html
-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of Tony Hwang
Sent: Sunday, April 06, 2003 8:14 PM
To: [email protected]
Subject: Re: [Icom] 761 Questions
Hi,
Do you have enough drive? If finals are bad, it'll get unusually hot.
Using dummy load for testing?
In the case of 765 I have, there is a pot on the logic board which can
adjust the o/p level.
73,
Tony, VE6CGX
wjdiamond wrote:
>Hi All,
>
>I am in the process for repairing a sick IC 761, I only have about 25 to
30
>watts out but a little more on SSB. I am not real familiar with the SS
>rigs and I sure can't find the 6146's in it.
>
>Is there a simple test procedure on the PA unit?
>
>Thanks in advance to the experts....
>
> 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 New Icom Radio Page
>
> 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/