[ICOM] Icom 765 Problem

[Gary Fiber]

Hi Bruce,

Yes I am the same Gary, thanks for the nice words.
I still do a few shows for Icom but have not since Dayton. I also 
changed jobs since then.
I now work for the Washington State Patrol. The job title is longer 
than my arm.
I am an " Electronics Communications Systems Technician - Field ".
I am handle the surveillance electronic devices for the agency I work for.

Look those solder joints over well seems to me one of the techs found 
those cracked pretty often when symptoms such as yours arose.
The display and S-meter are operating normally?

Gary K8IZ


At 07:08 PM 10/8/2005, you wrote:
>Thanks Gary, right on target.
>Removed the lower cover this evening, found the ICs bolted to the case.
>Tomorrow I will remove the main unit so I can properly rework the solder
>connections.
>Of course will report back to the board with the results.
>
>Is this the same Gary who as a tech support rep for Icom?
>If so, I owe you many thanks, you helped me on a number of occasions, and
>are one of the major reasons I bought and continue to buy Icom products.
>
>73 Bruce W1UJR (ex KG2IC)
>
>-----Original Message-----
>From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
>Behalf Of Gary Fiber
>Sent: Saturday, October 08, 2005 5:09 PM
>To: ICOM Reflector
>Subject: RE: [ICOM] Icom 765 Problem
>
>Bruce,
>
>Going from old memory its seems to me if the radio is upside down, knobs
>facing you the audio amps are on the left side using the chassis as the heat
>sink, they are T)-220 cases or similar and the tabs are bolted to the
>chassis. There were two of them as I remember the solder joints on the leads
>would get cracked.
>
>Gary K8IZ
>
>
>At 10:16 AM 10/8/2005, you wrote:
> >Hi Paul,
> >
> >Do you recall which transistors in question, Icom schematic numbers?
> >Appears that they are located on the main board, right?
> >Was it a process to correct, did you need to remove the main board?
> >
> >Tnx - Bruce W1UJR
> >
> >-----Original Message-----
> >From: icom-bounces at mailman.qth.net
> >[mailto:icom-bounces at mailman.qth.net] On Behalf Of paul at w8aef.com
> >Sent: Friday, October 07, 2005 11:33 PM
> >To: ICOM Reflector
> >Subject: Re: [ICOM] Icom 765 Problem
> >
> >Check the audio output transistors for cold solder joints.  My '765 had
> >several, cold solder joints, that is.
> >
> >de Paul, W8AEF
> >
> >----- Original Message -----
> >From: "Bruce J. Howes" <bhowes at suscom-maine.net>
> >To: "'ICOM Reflector'" <icom at mailman.qth.net>
> >Sent: Saturday, October 08, 2005 2:25 AM
> >Subject: [ICOM] Icom 765 Problem
> >
> >
> > > 765 #2 seems to have developed a bit of a problem.
> > > I turned it on last night to very low audio, could hear the signals,
> > > but at a very low level, even with the AF gain full open.
> > > Thinking that something may have happened to the speaker I removed
> > > the top cover and inspected the connector and speaker, no fault found.
> > > Just for good luck, and using a highly refined technique, I sharply
> > > rapped the chassis, BINGO, audio output full bore.
> > > Reinstalled the cover and she played fine for the rest of the evening.
> > >
> > > Tonight, similar problem, initial low audio, following by a good
> > > audio of static crackling, almost like a thunderstorm.
> > > I removed the antenna, static is still there.
> > > The received audio, AM, sounds quite nice, aside from the static.
> > >
> > > Any suggestions?
> > > Thought this might be a case of the PLL wax migration fault, but not
> > > sure as the audio is clear and not distorted.
> > >
> > > Tnx.
> > >
> > > 73 Bruce W1UJR
> > >
> >----
> >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/
>
>Gary Fiber K8IZ
>GROL PG-19-6691
>Washington State Resident
>
>
>----
>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/

Gary Fiber K8IZ
GROL PG-19-6691
Washington State Resident