[TechAssist] Re: Vertical or horizontal line
- From: Dennis Viereck <wa6ati@xxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Tue, 15 Jan 2002 06:18:02 -0800
Geez!
I'm glad someone said something. I have to bite my fingers each
time I read a post for a tech who tries to describe the symptom by
the name of the circuit. I do tech support over the phone everyday
and a day does not go by when I get a tech that confuses these
terms.
Figure this one out, you guys that don't know the difference! We,
on the other side of the fence cannot see the
symptom.................
Dennis Viereck
Jack wrote:
> Vertical is up and down
> Horizontal is left to right
>
> A horizontal line = no vertical sweep
> A vertical line = no horizontal sweep
>
> This is confusing to even the most experienced techs
> it seems...
>
> Jack
>
> --- Premium Technologies <premtech@xxxxxxxxxxxxxx>
> wrote:
> > Dan,
> > I have merely a thin vertical line about 1/4 (1/3)
> > of the way down from the top of the screen. I've
> > previously replace u4501 and changed-out r4511 on
> > your recent tip. No change...
> > I'll try resoldering the ground next, in the tuner.
> > I think my voltage is a bit high on pins 4 and 5 of
> > rn4501 (20v), but I don't believe that of itself
> > should collapse the vertical.
> > Thanks for the help...
> > Bill
> > Premium Technologies
> > Ocean Park, Washington
> > ----- Original Message -----
> > From: Webster TV
> > To: techassist@xxxxxxxxxxxxx
> > Sent: Monday, January 14, 2002 7:58 AM
> > Subject: [TechAssist] Re: GE - 31GT657FM1, Chassis
> > CTC177CC
> >
> >
> >
> > Bill,
> > Don't fully understand your problem. Do you have
> > vert. deflection and just
> > have a line across screen or don't you have vert.
> > deflection and the vert.
> > line is 1/4 of the way down screen instead of
> > across middle? Here's one tip
> > on a CTC177 for a vert. line but line is 1/3 of
> > the way up screen. Defective
> > U4501 and bad resister R4511(1ohm-2w)off of pin 2
> > of U4501. Also a
> > defective eprom caused by bad tuner grounds can
> > cause all kinds of problems,
> > including vert. problems.
> >
> >
> > Dan Webster
> >
> > Webster's TV
> >
> > Shullsburg, Wi
> >
> > ----- Original Message -----
> > From: Premium Technologies
> > <premtech@xxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Sunday, January 13, 2002 3:09 PM
> > Subject: [TechAssist] GE - 31GT657FM1, Chassis
> > CTC177CC
> >
> >
> > > Content-Type: text/plain;
> > > charset="Windows-1252"
> > > Content-Transfer-Encoding: quoted-printable
> > >
> > > BlankGentlemen,
> > > I'm having an elusive vertical problem with the
> > above described which is =
> > > producing a horizontal line 1/4 of the way down
> > from the top of the =
> > > screen. No schematic on this one, but from past
> > experience it seems my =
> > > in voltage might be low on the vertical
> > deflector U4501.
> > > I've replaced U4501, and about 8 of caps in
> > that circuit, (C-4502, =
> > > 4108, 4107, 4506, 4505, 4705, 4112, 4404) with
> > no change in symptoms. =
> > > My voltage readings on pin 1 and 2 of U4501 are
> > 13.4 and 24.7 =
> > > respectively, and 23.0 on 5-Vout.
> > > I've traced circuit for open shorts with no
> > luck, and quickly running =
> > > out of patience. Any help would be
> > appreciated...
> > > Bill
> > > Premium Technologies
> > > Ocean Park, Washington
> > >
> > >
> > >
> > >
> > >
> > >
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