[TechAssist] Re: mitsubishi tv CK3531R
- From: "George" <grndmstrg@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sun, 24 Aug 2003 18:49:57 -0700
Leonard,
I recently read an article that stated Tantalum capacitors have an higher
ESR than equivalent electrolytic capacitor. I mostly encounter them used for
supply line decoupling.
George
Afana Electronics
Moreno Valley, CA
----- Original Message -----
From: "Leonard Caillouet" <lcaillo@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Sunday, August 24, 2003 5:20 PM
Subject: [TechAssist] Re: mitsubishi tv CK3531R
> I'm confused. Who is recommending replacing electrolytics with Tantalum
> caps? I have not heard this from Mits. Did I miss something? We do
these
> sets frequently and have to change lots of caps, but never changed the
type.
> Typically tantalum caps should maintain a more stable capacitance and ESR
> over time where electrolytics do degrade, so there should be nothing wrong
> with replacing an electrolytic with a tantalum cap, but I have never seen
a
> recommendation to do so. In fact, as I understand it is getting harder to
> get tantalum caps and manufacturers are pushing the ceramic technology for
> use as replacements in SMDs. Seems unnecessary to me.
>
> I agree, I would not replace a tantalum with an electrolytic, although it
> would likely work fine in the short term, maybe even over time. In fact,
> since the runs of bad tantalum caps in the 80s I have had very few of them
> fail at all. I keep a bin of assorted tantalum caps from scrappers in
case
> I need one, but can't remember the last time I did.
>
> The CK3531 is one of the sets, BTW, that we will no longer service unless
we
> test ALL of the electrolytics. We have seen to many recalls when
repairing
> only the immediate problems. Typically we find one or two dozen leaky and
> high ESR electrolytics in these sets.
>
> Leonard Caillouet
> Electronics World
> Gainesville, FL
>
>
> ----- Original Message -----
> From: "Teltek3" <teltek3@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Sunday, August 24, 2003 7:11 PM
> Subject: [TechAssist] Re: mitsubishi tv CK3531R
>
>
> > Tony...
> > In vertical circuits (timing) they even reccomend to change the
> > electrolytics(1 to 2.2 ufd) with tantalums..so you are sort of
> backtracking.
> > Electrolytics will eventually fail, although I can not tell you why, or
> the
> > chemical makeup of the tantelums.
> >
> > -Ed-
> > Ed Gaidies
> > Tel-Tek Electronics
> > Ontario-Canada
> > teltek3@xxxxxxxxxxxx
> > ----- Original Message -----
> > From: "tony saracco" <tcselectronics@xxxxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Sunday, August 24, 2003 3:28 PM
> > Subject: [TechAssist] Re: mitsubishi tv CK3531R
> >
> >
> > > terry,
> > >
> > > what type of problem do you see if the 1uf 50v tant. cap is replaced
> with
> > a
> > > standard 1uf lytic. I have replaced many and never really had any
> > problems.
> > > Just curious.
> > >
> > > Tony Saracco
> > > TCS ELECTRONICS
> > > Elgin , IL 60120
> > > 847-695-1928
> > > tcselectronics@xxxxxxxxxxxxxxxx
> > > ----- Original Message -----
> > > From: "Terry H." <tvdoc@xxxxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Sunday, August 24, 2003 10:09 AM
> > > Subject: [TechAssist] Re: mitsubishi tv CK3531R
> > >
> > >
> > > > You're going to find two 100/35volt caps that need changing as well
as
> a
> > > > 1uf/50volt tantalum that should always be changed while you're in
> there.
> > > > They might be using a small purple 'OSCON' cap that looks like a
> normal
> > > > electrolytic, but needs to be replaced with a tantalum or the exact.
> > Hard
> > > > lesson if you use a standard electrolytic in it's place.
> > > > Terry H.
> > > > The TV Shop
> > > > Gonzales, Tx
> > > >
> > > > ----- Original Message -----
> > > > From: "Ed" <edb3@xxxxxxx>
> > > > To: <techassist@xxxxxxxxxxxxx>
> > > > Sent: Saturday, August 23, 2003 10:37 PM
> > > > Subject: [TechAssist] Re: mitsubishi tv CK3531R
> > > >
> > > >
> > > > > ok, thanks
> > > > > Ed
> > > > > Video Pro-Tech
> > > > > Mesa Az
> > > > > ----- Original Message -----
> > > > > From: "al m" <ampm@xxxxxxx>
> > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > Sent: Saturday, August 23, 2003 8:35 PM
> > > > > Subject: [TechAssist] Re: mitsubishi tv CK3531R
> > > > >
> > > > >
> > > > > > Don't have the exact #'s But find the 24V line off the flyback
and
> > > check
> > > > > the
> > > > > > filter cap.
> > > > > > al marquardt
> > > > > > ampm@xxxxxxx
> > > > > > Al Marquardt Electronic Repair
> > > > > > 206 W Main
> > > > > > Girardville Pa. 17935
> > > > > > ----- Original Message -----
> > > > > > From: "Ed" <edb3@xxxxxxx>
> > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > Sent: Saturday, August 23, 2003 11:32 PM
> > > > > > Subject: [TechAssist] Re: mitsubishi tv CK3531R
> > > > > >
> > > > > >
> > > > > > > Yes, but have worked on very few mitsubishi tv's, my expertise
> is
> > > > really
> > > > > > > video cameras, have been out of tv's for a long time, im sure
> ill
> > > > > figure
> > > > > > it
> > > > > > > out, was just hoping to get some help to save time
> > > > > > > ----- Original Message -----
> > > > > > > From: "al m" <ampm@xxxxxxx>
> > > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > > Sent: Saturday, August 23, 2003 8:24 PM
> > > > > > > Subject: [TechAssist] Re: mitsubishi tv CK3531R
> > > > > > >
> > > > > > >
> > > > > > > > You're not a tech are you?
> > > > > > > > al marquardt
> > > > > > > > ampm@xxxxxxx
> > > > > > > > Al Marquardt Electronic Repair
> > > > > > > > 206 W Main
> > > > > > > > Girardville Pa. 17935
> > > > > > > > ----- Original Message -----
> > > > > > > > From: "Ed" <edb3@xxxxxxx>
> > > > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > > > Sent: Saturday, August 23, 2003 11:20 PM
> > > > > > > > Subject: [TechAssist] Re: mitsubishi tv CK3531R
> > > > > > > >
> > > > > > > >
> > > > > > > > > can you tell me what the caps are? c??? Dont have a
> schematic,
> > > im
> > > > > not
> > > > > > > sure
> > > > > > > > > what cap it is your talking about
> > > > > > > > > ED
> > > > > > > > > Video Pro-Tech
> > > > > > > > > Mesa AZ
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > ----- Original Message -----
> > > > > > > > > From: "al m" <ampm@xxxxxxx>
> > > > > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > > > > Sent: Saturday, August 23, 2003 7:58 PM
> > > > > > > > > Subject: [TechAssist] Re: mitsubishi tv CK3531R
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > > Replace also the B+ cap for the vertical off the
flyback.
> > > > > > > > > > al marquardt
> > > > > > > > > > ampm@xxxxxxx
> > > > > > > > > > Al Marquardt Electronic Repair
> > > > > > > > > > 206 W Main
> > > > > > > > > > Girardville Pa. 17935
> > > > > > > > > > ----- Original Message -----
> > > > > > > > > > From: "Ed" <edb3@xxxxxxx>
> > > > > > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > > > > > Sent: Saturday, August 23, 2003 8:01 PM
> > > > > > > > > > Subject: [TechAssist] mitsubishi tv CK3531R
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > > > This tv has retrace lines and vertical foldover at the
> top
> > > of
> > > > > the
> > > > > > > > > picture
> > > > > > > > > > for the first 2 or 3 min , after warm is ok. I dont have
a
> > > > > shematic
> > > > > > of
> > > > > > > > > this
> > > > > > > > > > set, im sure its a cap, anyone had this problem that can
> > tell
> > > me
> > > > > > what
> > > > > > > > caps
> > > > > > > > > > usually fail? thx
> > > > > > > > > > > Ed
> > > > > > > > > > > Video Pro-Tech
> > > > > > > > > > > Mesa Az
> > > > > > > > > > >
> > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
****************************************************************************
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