[TechAssist] Re: Philips F8 - Vert Problem?
- From: "Dan Garris" <dgarris@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 11 Oct 2004 17:03:20 -0400
Thats what I thought as well. I have no Yoke buzzing and the picture has no
Convergence problems or keystoning - just the bottom half of the picture has
"lots of lines" in it. You can see thru the lines and make out the bottom of
the picture and when you change channels the On-screen display (which shows
at the top of the picture) can be seen retracing at the bottom of the screen
along with the lines in the bottom of the screen. The top half is fine. I
even replaced C2489 even though it tested ok with the ESR meter. I still
have the problem. I've not seen this problem on the F8 before!
Dan Garris
Garris TV
New Bern, NC
dgarris@xxxxxxxxxxx
(252) 638-4477
>From: "John at Main TV" <maintv2004@xxxxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: <techassist@xxxxxxxxxxxxx>
>Subject: [TechAssist] Re: Philips F8 - Vert Problem?
>Date: Mon, 11 Oct 2004 14:47:15 -0600
>
>The F8 is very common for yoke problems but your symptom does not sound
>like
>a yoke. It usually causes bad convergence or a buzz. The only way that I
>know to check is by substitution from another 27 ". Or if you swap one from
>a 25", it will work but the convergence will be way off. The cost of the
>yoke is around $50. The common problem for foldover on the bottom is C2489.
>John.
>John Mielke
>Main TV
>636 main St.
>Longmont, Co
>phone 303 776 6955
>fax 303 776 0792
>maintv2004@xxxxxxxxxxx
>
>----- Original Message -----
>From: "Dan Garris" <dgarris@xxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Monday, October 11, 2004 2:19 PM
>Subject: [TechAssist] Philips F8 - Vert Problem?
>
>
> > Make: Philips 27" TV
> > Model: TS2746 C101
> > Chassis: F8
> >
> > Has vertical lines (bad vertical foldover) only on "bottom half" of
>picture.
> > Top half of picture looks fine. I replaced the STV9379FA Vertical
>output
>IC
> > (no change) and checked all vertical caps and C2489 (all ok) (no change)
> > also checked R3409 & R3488 out of circuit (they were ok). TV does not go
> > into shutdown nor does it have any keystone effect, just bad Vert
>foldover
> > on bottom half of picture. Tips say maybe bad Yoke?
> >
> > BTW, This is "NOT" the common bright screen symptom caused by R3340 on
>the
> > CRT board. This set stays on and has a picture. Anyone seen this
>problem?
>Is
> > it the Yoke?
> >
> > Dan Garris
> > Garris TV
> > New Bern, NC
> > dgarris@xxxxxxxxxxx
> > (252) 638-4477
> >
> >
> >
> >
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