[TechAssist] Re: Zenith flyback --FIXED
- From: ray clarke <ray260@xxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 16 Jul 2003 12:05:35 -0700 (PDT)
I've only seen around 50 Ohms or infinate.
--- teltek3 <teltek3@xxxxxxxxxxxx> wrote:
> Jim;
> 45 ohms??? I normally read 120 to 145 ohms..are you
> sure about 45?
>
> -Ed-
> Tel-Tek Electronics
> Ontario-Canada
> teltek3@xxxxxxxxxxxx
> ----- Original Message -----
> From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, July 16, 2003 1:36 PM
> Subject: [TechAssist] Re: Zenith flyback --FIXED
>
>
> > Tom, R-U sure? Most HO transistors have an
> internal base to emitter
> resistor
> > of about 45 ohms. This is a mistake we have all
> made at least once.
> > **************************************************
> > Jim Myers
> > Since 1972
> > Telrad Electronic Services Co.
> > Fort Wayne, IN 46815
> > *************************************************
> > ----- Original Message -----
> > From: "Tri-County Tv" <tricountytv@xxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Wednesday, July 16, 2003 12:29 PM
> > Subject: [TechAssist] Re: Zenith flyback --FIXED
> >
> >
> > Jeff,
> > Sorry it took a little while to get back
> to you, as I busy kicking
> > myself in the AXX as you were completely right,
> and I should have known
> > better. The H.O. Transistor has a base to emitter
> short of 45 ohms, when I
> > checked it in circuit it read shorted but I took
> for granted it was just
> > drive transformer secondary winding. But when you
> think about it
> logically,
> > it had to be the H.O.Transistor. Thanks Again ,
> and to all who replied so
> > quickly.
> > Tom Berger
> > Tri-County TV
> > Robbinsville
> > North Carolina 28771
> > (tricountytv@xxxxxxxxxxxxx)
> > ----- Original Message -----
> > From: "Shoreline Electronics" <jstielau@xxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Wednesday, July 16, 2003 12:23 PM
> > Subject: [TechAssist] Re: Zenith flyback --need
> sub info
> >
> >
> > > Remove the output transistor completely: Fire
> up the set and check for
> > good
> > > base drive...that will confirm your H-drive
> question:
> > >
> > > Try another output transistor to be sure....it
> really sounds like it's
> > > defective...since PS is not squealing once you
> unsolder the collector.
> > >
> > > ==========================
> > > Jeff Stielau
> > > Shoreline Electronics Repair
> > > 344 East Main Street
> > > Clinton,CT 06413
> > > 860-399-1861
> > > 860-664-3535 (fax)
> > > jstielau@xxxxxxxx
> > > ==========================
> > > "If you push something hard enough it will fall
> over."
> > > Fudd's First Law of Opposition - Sir Sidney Fudd
> > >
> > >
> > > ----- Original Message -----
> > > From: "Tri-County Tv"
> <tricountytv@xxxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Wednesday, July 16, 2003 12:14 PM
> > > Subject: [TechAssist] Re: Zenith flyback --need
> sub info
> > >
> > >
> > > > Jeff,
> > > > I checked that and it's good.I did
> notice that there is no b+
> > > getting
> > > > to the driver transformer and I'm not sure if
> I should have voltage
> > there
> > > > when you first plug it in.
> > > > Tom Berger
> > > > Tri-County TV
> > > > Robbinsville
> > > > North Carolina 28771
> > > > (tricountytv@xxxxxxxxxxxxx)
> > > > ----- Original Message -----
> > > > From: "Shoreline Electronics"
> <jstielau@xxxxxxxx>
> > > > To: <techassist@xxxxxxxxxxxxx>
> > > > Sent: Wednesday, July 16, 2003 12:02 PM
> > > > Subject: [TechAssist] Re: Zenith flyback
> --need sub info
> > > >
> > > >
> > > > > Your Horizontal Output is probably shorted.
> > > > >
> > > > > ==========================
> > > > > Jeff Stielau
> > > > > Shoreline Electronics Repair
> > > > > 344 East Main Street
> > > > > Clinton,CT 06413
> > > > > 860-399-1861
> > > > > 860-664-3535 (fax)
> > > > > jstielau@xxxxxxxx
> > > > > ==========================
> > > > > "If you push something hard enough it will
> fall over."
> > > > > Fudd's First Law of Opposition - Sir Sidney
> Fudd
> > > > >
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "Tri-County Tv"
> <tricountytv@xxxxxxxxxxxxx>
> > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > Sent: Wednesday, July 16, 2003 11:19 AM
> > > > > Subject: [TechAssist] Zenith flyback --need
> sub info
> > > > >
> > > > >
> > > > > > Hello,
> > > > > > I got this zenith color TV model
> SS2761S , module 9-913
> > ,and
> > > > the
> > > > > flyback had a slit in the side with stuff
> oozzing out , Flyback #
> > > 95-4203
> > > > ,
> > > > > when you look this # up on tritronics, it
> shows a 95-4203-REP for 17
> > > > > dollars, so I ordered it, and installed it
> into the module and now ,
> > > when
> > > > > you plug it in, the ps squeals, so I
> replaced all the usual ps
> > > components,
> > > > > and same problem,also checked for shorts on
> secondary of fly and
> > > > everything
> > > > > looks ok, If I disconnect the collector of
> the HOT it stops
> squealing
> > > and
> > > > ps
> > > > > voltages return to normal, however I am not
> reading and B+ on any
> legs
> > > of
> > > > > the driver transformer, I do not have the
> schematic and would
> greatly
> > > > > appreciate if someone could upload one.
> Could this replacement fly
> be
> > > the
> > > > > trouble? Has anyone had experience with this
> flyback?
> > > > > > Tom Berger
> > > > > > Tri-County TV
> > > > > > Robbinsville
> > > > > > North Carolina 28771
> > > > > > (tricountytv@xxxxxxxxxxxxx)
> > > > > >
> > > > >
> > > >
> > >
> >
>
****************************************************************************
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=== message truncated ===
=====
Ray Clarke
Billette TV Howick, Que
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