[ICOM] IC-765 question

Wed Apr 22 23:16:49 EDT 2015

Thanks Ron.  I see that there about 12 or so electrolytics in this power
supply. I have changed 3. Without the test equipment are there any you
would suspect over others?
On Apr 22, 2015 7:49 PM, "Ron via Icom" <icom at mailman.qth.net> wrote:

> Hi, I have a large Icom collection and although I don't have a 765, I do
> have a 761. If you do your own repairs as I do, the suggestion of acquiring
> an ESR meter is HIGHLY recommended!
> I now have several and can state that electrolytic caps are the one
> electronic component that does NOT age well!
> I replace hundreds / year.
>
> ron
> N4UE
>
>
>
>
>
>
>
> -----Original Message-----
> From: Marc & Tricia Niebergall <mtniebs at gmail.com>
> To: ICOM Reflector <icom at mailman.qth.net>
> Sent: Wed, Apr 22, 2015 4:34 pm
> Subject: Re: [ICOM] IC-765 question
>
>
> It's looking like it is in the internal power supply.  I disconnected it
> and
> jumped a Yaesu 13.8 vdc and "instant on".  Tried the internal power
> supply again
> and a short "pause" before coming alive.  So, now it is just a
> matter of
> deciding which components are likely the problem.  May start with
> all the big
> electrolytics.  They are pretty old and probably getting
> suspect
> anyway.
>
> Suggestions?
>
> Marc
>
> On Wed, Apr 22, 2015 at 1:13 PM, Bert Almemo
> <balmemo at sympatico.ca> wrote:
>
> > Most likely the internal PS. The 765 is known
> for PS problems. If you have
> > an ESR meter, Equivalent Series Resistor, you
> could possibly measure the
> > elec. Caps without removing them. If not, maybe you
> can borrow from a
> > friend. It's a great tool to trouble shoot elec.caps. Good
> luck!
> >
> > 73 Bert, VE3NR
> >
> >
> >
> > -----Original Message-----
> > From: Icom
> [mailto:icom-bounces at mailman.qth.net] On Behalf Of Marc &
> > Tricia
> >
> Niebergall
> > Sent: Wednesday, April 22, 2015 2:29 PM
> > To: ICOM Reflector
> >
> Subject: Re: [ICOM] IC-765 question
> >
> > Will try that, thanks.
> > On Apr 22, 2015
> 11:26 AM, "GGLL" <nagato at madryndigital.com.ar> wrote:
> >
> > > You may try to feed
> the rig with an external power supply to see if it
> > > has the same behaviour.
> >
> >
> > > Regards
> > > Guillermo - LU5WE.
> > >
> > > El 22/04/15 a las 15:08, Marc &
> Tricia Niebergall escibió:
> > >
> > >> When pushing the AC on switch there is
> sometimes a pause of a couple
> > >> seconds before the rig powers up.  Other
> times it comes on almost
> > >> instantly.  This usually occurs on the first
> application of the day.
> > >> Don't
> > >> know if it is a relay or an electrolytic
> capacitor taking time to
> > >> charge or what.  I changed two 33uf electrolytics
> in the power supply
> > >> that were swollen, but no change.  Any suggestions are
> welcome.
> > >>
> > >> Thanks,
> > >> Marc-k7wxk
> > >> ----
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> Flanagan K7VC: icom-owner at mailman.qth.net Icom
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