[ICOM] IC-765 question

[Ron via Icom]

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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