[ICOM] IC-765

[bonddaleena at aol.com]

Mike, I just had a similar problem on my 761. The problem was the T/R 
relay contacts. It was an easy fix (once you can get to the relay!!). A 
little contact cleaner on a strip of business card fixed her. The relay 
has a clear plastic cover. I have found that this particular relay is 
used in a lot of Icoms and they exhibit the same problem. This is 
listed on Icom's Website as a 'problem' under the 761.
I'm sure Tim is also correct about the solder connections.......

73

ron

N4UE

-----Original Message-----
From: Tim Duffy K3LR <k3lr at k3lr.com>
To: 'ICOM Reflector' <icom at mailman.qth.net>
Sent: Tue, 11 Nov 2008 12:11 pm
Subject: RE: [ICOM] IC-765



Hi Mike:

I have three IC765s and have observed the same problems in the past.

Most of the issues with the 765 like this are the result of poor solder
joints on the suspect PC board. Many of the problems I had were cured 
with
re-soldering joints on the boards (the ones responsible for the circuit 
in
question).

This solder joint problem was real bad on the Kenwood TS940 series of 
radios
and even some TS930. Take a look at the PC boards in your 765 and you 
will
see for yourself where bad solder joints are.

One of the problems during the time the 765 was built was the quality 
of the
solder used (recovered solder) in Japan for wave soldering.

The 765 is still one of the VERY best performing (non DSP) radios 
around.

73!
Tim K3LR

100% Icom station
http://www.k3lr.com



-----Original Message-----
 From: icom-bounces at mailman.qth.net 
[mailto:icom-bounces at mailman.qth.net] On
Behalf Of w9mws at aol.com
Sent: Tuesday, November 11, 2008 10:55 AM
To: icom at mailman.qth.net
Subject: [ICOM] IC-765

I just acquired a 3900 S/N IC-765 as a second radio.  So far it's
working well and I'm enjoying it.  There are a couple of small issues,
that I can't find any reason for, that perhaps someone on the list can
shed some light on:

Approximately 60% of the time when I power on the radio the audio is
"muted".  It's like the T/R relay is in the mute position.  If I punch
the 14 MHz button on the keypad and then go back to the original band,
audio is back to normal.

The other oddity is the display which seems to be "dimmed" a bit.  Each
display section has segments with a "bright" portion and a "dim"
portion and comparing it to a friends radio, mine display is visibly
dimmer on both the white and red display elements.  With no reference
to display dimming in either the owners manual or the tech service
manual, I'm not sure what I have.

Thanks for any help from the group.

73, Mike W9MWS
----
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/

----
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/