[TechAssist] Re: Magnavox CS4535A101 Chassis 25S104-00AA picture distorting
- From: "Shaun" <satguy@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 28 Sep 2005 17:11:09 -0600
OK all my regulated voltages are on the money 130 stays at 130 now. If I
turn the a/c down to about 90 volts my picture stays perfect no jitters. I
scoped Q530 Collector and it stays around .2 volts that's point two. If I
turn up the a/c to 120 then the collector of Q530 increases to 1.9 vdc and
the picture jumps and jitters and tears from the left side all the way
across the screen. I really don't know where to go next noone has seen this
problem in these sets before.
Shaun
Advanced Electronics
224 West Riverview Ave.
Fort Morgan, CO 80701
----- Original Message -----
From: "Shaun" <satguy@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, September 28, 2005 4:16 PM
Subject: [TechAssist] Re: Magnavox CS4535A101 Chassis 25S104-00AA picture
distorting
> Dag is connected, I found now that Q661 ABL transistor according to my
sams
> says the base should be 17.0 vdc my set measures between 2-4 volts dc. I
> replaced Q661 but no change. I have 18 vdc on the other side of D661 and
26
> vdc from the 26 volt source this set is driving me crazy.
>
> Shaun
>
> Advanced Electronics
> 224 West Riverview Ave.
> Fort Morgan, CO 80701
> ----- Original Message -----
> From: <daryls_tv@xxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, September 28, 2005 3:32 PM
> Subject: [TechAssist] Re: Magnavox CS4535A101 Chassis 25S104-00AA picture
> distorting
>
>
> > Shaun,
> > I don't know if this is the same as your set but I had a strange symptom
> si=
> > milar to yours that turned out to be the ground connector from the CRT
dag
> =
> > was not connected to the proper place. The connector it goes to is just
> in=
> > front of the flyback as you are looking from the back. Usually it is a
> si=
> > ngle white wire but I have seen them in black as well. I think it is in
> the=
> > ABL circuit.
> > HTH
> > Daryl
> > Daryl's TV
> > 2402 Wyoming Ave.
> > El Paso, TX 79903
> > 915-565-9184 Voice/Fax
> > daryls_tv@xxxxxxx
> > www.angelfire.com/tv2/daryls_tv
> > ----- Original Message -----
> > From: Shaun <satguy@xxxxxxxxxxxxx>
> > To: techassist@xxxxxxxxxxxxx
> > Subject: [TechAssist] Re: Magnavox CS4535A101 Chassis 25S104-00AA
picture
> d=
> > istorting
> > Date: Wed, 28 Sep 2005 15:16:46 -0600
> >
> > >=20
> > > I am still in the dark on this dog. I replaced C431, C432, IC430,
Q400,
> > > C432, C431, Q530, Z530, Z405 and the picture still jumps around
wiggles
> a=
> > nd
> > > really freaks out when the screen has a white background. I noticed
that
> =
> > the
> > > 130 volt line is down to 125 volts but the most noticeable voltage
that
> is
> > > off is Q530 the collector is 2.1 vdc and should be POINT 2 volts
that's
> .=
> > 2.
> > > When I turn down the ac to the set this voltage goes down to about .3
> and
> > > the picture stops shacking I really don't know where else to look.
HELP
> > >=20
> > > Shaun
> > >=20
> > > Advanced Electronics
> > > 224 West Riverview Ave.
> > > Fort Morgan, CO 80701
> > > ----- Original Message -----
> > > From: "John Conti" <contitv@xxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Thursday, September 01, 2005 8:58 AM
> > > Subject: [TechAssist] Re: Magnavox CS4535A101 Chassis 25S104-00AA
> picture
> > > distorting
> > >=20
> > >=20
> > > > Shaun, are your still working on the cs4535a101. If so did you
replace
> =
> > the
> > > > main filter c405 (470/200v) and also check r433 (270k) and r432
(1000
> > > > ohm).And c432 should not be getting hot.
> > > > Let me know how you came out. Also next to c432 make sure those two
> lar=
> > ge
> > > > resistors are solder good they get hot and solder becomes bad. also
> make
> > > > sure there value has not changed.
> > > >
> > > > John
> > > > Conti,sTV
> > > > Texas
> > > >
> > > >
> > > >
> > > >
> > > > >From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > > > >Reply-To: techassist@xxxxxxxxxxxxx
> > > > >To: <techassist@xxxxxxxxxxxxx>
> > > > >Subject: [TechAssist] Re: Magnavox CS4535A101 Chassis 25S104-00AA
> pict=
> > ure
> > > > >distorting
> > > > >Date: Tue, 30 Aug 2005 17:28:15 -0600
> > > > >
> > > > >Still working on this dog getting no where, I notice the horz
tearing
> =
> > and
> > > > >picture bouncing especially when on the news when the weather boxes
> are
> > > up
> > > > >with the numbers and temps on the screen. Only time I see a
> difference=
> > in
> > > > >is
> > > > >when I freeze mist Q510 or in that area but I have checked
everything
> =
> > in
> > > > >that area anyway back to the bench.
> > > > >
> > > > >Shaun
> > > > >
> > > > >Advanced Electronics
> > > > >224 West Riverview Ave.
> > > > >Fort Morgan, CO 80701
> > > > >----- Original Message -----
> > > > >From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > > > >To: <techassist@xxxxxxxxxxxxx>
> > > > >Sent: Tuesday, August 30, 2005 11:38 AM
> > > > >Subject: [TechAssist] Re: Magnavox CS4535A101 Chassis 25S104-00AA
> pict=
> > ure
> > > > >distorting
> > > > >
> > > > >
> > > > > > I replaced C431, but C432 still runs hot to the touch does
anyone
> k=
> > now
> > > > >if
> > > > > > this is normal in this set?
> > > > > > I think after C432 heats up that's when the picture goes bad but
I
> > > have
> > > > > > replaced IC430, Q400, C432, C431 and still C432 gets too hot in
my
> > > > >opinion.
> > > > > > I scoped the emitter of Q400 and it is 130 volts DC with 1.5 v
p-p
> =
> > all
> > > > >the
> > > > > > other voltages near the regulator are good. Can anyone help with
> th=
> > is
> > > > >dog?
> > > > > >
> > > > > > Shaun
> > > > > >
> > > > > > Advanced Electronics
> > > > > > 224 West Riverview Ave.
> > > > > > Fort Morgan, CO 80701
> > > > > > ----- Original Message -----
> > > > > > From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
> > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > Sent: Tuesday, August 30, 2005 9:49 AM
> > > > > > Subject: [TechAssist] Re: Magnavox CS4535A101 Chassis
25S104-00AA
> > > > >picture
> > > > > > distorting
> > > > > >
> > > > > >
> > > > > > > Replace C431 as well (3.3mfd/200V).
> > > > > > >
> > > > > > > Bob Waterman, CET=AE #RI-28
> > > > > > > Master Technician License #9109
> > > > > > > Service Manager / Parts Manager
> > > > > > > Gemini Computer, TV, & Security Alarms
> > > > > > > (508)695-7302
> > > > > > > (508)695-7769 FAX
> > > > > > > geminitv@xxxxxxxxxxx
> > > > > > >
> > > > > > >
> > > > > > > ----- Original Message -----
> > > > > > > From: "Lindsey Altman" <athomeservice@xxxxxxxxxxxxx>
> > > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > > Sent: Tuesday, August 30, 2005 11:45 AM
> > > > > > > Subject: [TechAssist] Re: Magnavox CS4535A101 Chassis
> 25S104-00AA
> > > > >picture
> > > > > > > distorting
> > > > > > >
> > > > > > >
> > > > > > > Hi Shaun,
> > > > > > >
> > > > > > > If it has a PIP module there are caps under the top most
> boa=
> > rd
> > > in
> > > > >=3D
> > > > > > > it
> > > > > > > that you should replace. They are all 100uf if memory serves
me
> > > right.
> > > > > > >
> > > > > > > HTH,
> > > > > > > Lindsey
> > > > > > >
> > > > > > > Lindsey Altman
> > > > > > > At Home Service Company
> > > > > > > 440 Cedar Ave.
> > > > > > > Claxton, Georgia 30417
> > > > > > > 912-739-1019
> > > > > > > athomeservice@xxxxxxxxxxxxx
> > > > > > >
> > > > > > >
> > > > > > > -----Original Message-----
> > > > > > > From: techassist-bounce@xxxxxxxxxxxxx
> > > > > > > [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Shaun
> > > > > > > Sent: Monday, August 29, 2005 10:33 PM
> > > > > > > To: techassist@xxxxxxxxxxxxx
> > > > > > > Subject: [TechAssist] Re: Magnavox CS4535A101 Chassis
> 25S104-00AA=
> > =3D
> > > > > > > picture
> > > > > > > distorting
> > > > > > >
> > > > > > > Something I just noticed C432 (100 mfd 200 Volt) is getting
> fairly
> > > > >warm
> > > > >=3D
> > > > > > > so I
> > > > > > > replaced with another new one and that one is getting pretty
> warm
> > > > >also.
> > > > >=3D
> > > > > > > I
> > > > > > > also replaced the regulator STR30130 and still no help.
> > > > > > >
> > > > > > > Shaun
> > > > > > >
> > > > > > > Advanced Electronics
> > > > > > > 224 West Riverview Ave.
> > > > > > > Fort Morgan, CO 80701
> > > > > > > ----- Original Message -----=3D20
> > > > > > > From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > > > > > > To: "tech" <techassist@xxxxxxxxxxxxx>
> > > > > > > Sent: Monday, August 29, 2005 7:25 PM
> > > > > > > Subject: [TechAssist] Magnavox CS4535A101 Chassis 25S104-00AA
> > > picture
> > > > > > > distorting
> > > > > > >
> > > > > > >
> > > > > > > > This set has a strange picture wiggle only on the left side
> and
> > > only
> > > > >=3D
> > > > > > > after
> > > > > > > > it warms up and usually only with a bright screen or words
on
> t=
> > he
> > > =3D
> > > > > > > screen.
> > > > > > > I
> > > > > > > > replaced the C432 100 mfd 200 volt and I replace Q510
because
> w=
> > hen
> > > =3D
> > > > > > > heated
> > > > > > > it
> > > > > > > > caused the picture to distort. No help so I am assuming it
is
> =
> > =3D
> > > > > > > something
> > > > > > > near
> > > > > > > > Q510. Has anyone seen this before?
> > > > > > > >
> > > > > > > > Shaun
> > > > > > > >
> > > > > > > > Advanced Electronics
> > > > > > > > 224 West Riverview Ave.
> > > > > > > > Fort Morgan, CO 80701
> > > > > > > >
> > > > > > > > =3D
> > > > > >
> > > > > >
> > > >
> > >
> > -----------------------------------------------------------------------=
> > --=3D
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