[TechAssist] Re: Zenith SS8769H2, 9-840-1, 9-822-1 no power, FIXED

From: "Leonard G. Caillouet" <lcaillo@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Date: Thu, 21 Nov 2002 10:34:23 -0500
Rich,

It comes as a foldout attached to the bottom of the LC103 cap and inductor
analyzer and I doubt that they publish it.  What is your fax number?

Leonard G. Caillouet
Service Manager
Electronics World
Gainesville, FL
352-332-5608
352-332-5668 (fax)

----- Original Message -----
From: "Rich Bateman" <rbateman@xxxxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, November 21, 2002 8:11 AM
Subject: [TechAssist] Re: Zenith SS8769H2, 9-840-1, 9-822-1 no power, FIXED


>
> Leonard:
>     If I read your post correctly you said that you have a chart of esr
> readings for various caps.  This place would never allow me the money to
by
> Sencore products but it would help me quite a bit if I could get a copy of
> this chart.  Is this chart something that can be purchased through Sencore
> or do they only supply it to their customers?
>
> Thanks,
> Rich
>
> Richard J. Bateman, CET, CA.
> Electronics Program Area Coordinator
> Amherst Campus
> 716-691-0012  EXT - 232
> E-MAIL  rjbateman@xxxxxxxxxxxxxxxxxx
>
>
>
> -----Original Message-----
> From: Leonard G. Caillouet [mailto:lcaillo@xxxxxxxxxxxx]
> Sent: Wednesday, November 20, 2002 5:52 PM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: Zenith SS8769H2, 9-840-1, 9-822-1 no power,
> FIXED
>
>
>
> Thanks Bob, you were right on.  I found one cap C3407 100uF 25V in the
> primary of the power supply that had slightly high ESR (6 ohm) and
marginal
> DA (11%).  I resoldered a number of connections, though none really looked
> bad and now it works.
>
> I would not have thought that the ESR reading was all that bad but
checking
> the Sencore chart it is too high for this value cap.
>
> Leonard G. Caillouet
> Service Manager
> Electronics World
> Gainesville, FL
> 352-332-5608
> 352-332-5668 (fax)
>
> ----- Original Message -----
> From: "Bob@Bobs tv" <woodman1@xxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, November 20, 2002 3:45 PM
> Subject: [TechAssist] Re: Zenith SS8769H2, 9-840-1, 9-822-1 no power
>
>
> >
> > Len,
> >      Remove sweep module 9-822 and check for loose connections and ESR
> caps
> > in the power supply. You may also want to do search as this is a C3
> chassis.
> > Hope this helps
> > Bob,
> >
> > Bobs TV   Worcester, ma
> >
> > woodman1@xxxxxxxx
> >
> > Main  508-853-1482
> > Fax    508-853-1480
> > ----- Original Message -----
> > From: "Leonard G. Caillouet" <lcaillo@xxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Wednesday, November 20, 2002 3:14 PM
> > Subject: [TechAssist] Zenith SS8769H2, 9-840-1, 9-822-1 no power
> >
> >
> > >
> > > Any of you zenith experts have some tips on this one?  I have no
manual
> > (NLA
> > > from Zenith) and no experience with this set.  The set will not power
> up.
> > > Relay clicks twice.  Power supply has output on secondary, 135v at HOT
> > > collector.  FBT tests good, nothing happens at HOT except slight drop
in
> > dc
> > > at collector when it tries to turn on.  No drive signal at all
appears.
> > > Micro is powered and it does respond to power button.
> > >
> > > power/deflection module is 9-840-1
> > > control/video module is 9-822-1
> > >
> > > I am guessing that the VCJ is IC2301 (221-518).  can anyone tell me
> > anything
> > > about it?  Where is it supplied from, H drive at what pin, etc?  It
> > appears
> > > to not be powered...
> > >
> > > None of the Zenith manuals that I have contain anything like these
> > modules.
> > > Any help would be appreciated.
> > >
> > > Leonard G. Caillouet
> > > Service Manager
> > > Electronics World
> > > Gainesville, FL
> > > 352-332-5608
> > > 352-332-5668 (fax)
> > >
> > >
> > >
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References:
- [TechAssist] Re: Zenith SS8769H2, 9-840-1, 9-822-1 no power, FIXED
  - From: Rich Bateman
[TechAssist] Re: Zenith SS8769H2, 9-840-1, 9-822-1 no power, FIXED

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