[TechAssist] Re: mitsubishi tv CK3531R
- From: "Teltek3" <teltek3@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sun, 24 Aug 2003 20:46:30 -0400
Leonard;
You have the floor...I only mentioned that Back around 94-95 Mitsubishi
recommended changing the 1uf/35 volts with a tantalum capacitor. One of
their few Service Bulletins they seem to put out. I can dig it up if need
be.
I have no idea, and will not try to state why, since I do not do enough
of them to waste my time. It just seems to me that electrolytic were not one
of Mitsubishi's high points, either by circuit design, or just lousy
electrolytic.
Every manufacturer seems to have a breakdown rate on these, and probably
105 deg. caps will not change this. At least most of us have learned, with
time and experience, what the week points are...but never have I seen a
product, that a Technician recommends to change all "electrolytics".
Mitsubishi has left Canada...as far as Electronics...hopefully their
cars do not display the same symptoms at someone elses expense...could be
more life threatning.
BTW..if you have been doing Mitsubishi Electronics for a while, do you
remember their Car Audio Products, Home Stereos, and Portable Audio
Products...I rest my case.
Technology was great as far as VCR's were concerned. I went thru all
their products here because we had the Picture Tube plant in our town, and
Employees bought the product at Employee's Discounts, so I saw them all.
I was the Warranty Depot.
-Ed-
Ed Gaidies
Tel-Tek Electronics
Ontario-Canada
teltek3@xxxxxxxxxxxx
----- Original Message -----
From: "Leonard Caillouet" <lcaillo@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Sunday, August 24, 2003 8:20 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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