[TechAssist] Re: Philips F8 - Vert Problem
- From: "Dan Garris" <dgarris@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 11 Oct 2004 22:01:05 -0400
Thanks Max, I do have the Sams #4596 to go by for now. I was just hoping
some other Tech has ran across this odd vertical problem on these common
Philips F8 Chassis. I am at home right now but will troubleshoot more in the
morning. Thanks again Max for the very kind offer.
Dan Garris
Garris TV
New Bern, NC
dgarris@xxxxxxxxxxx
(252) 638-4477
>From: mebonnell@xxxxxxxxx (Old TV Man)
>Reply-To: techassist@xxxxxxxxxxxxx
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] Re: Philips F8 - Vert Problem
>Date: Mon, 11 Oct 2004 16:29:57 -0500
>
>Dan I have the schematic if you want any of it scanned.
>
>Max Bonnell
>Bonnell TV
>Robinson, IL
>
>Sender: techassist-bounce@xxxxxxxxxxxxx From:
>dgarris@xxxxxxxxxxx(Dan=A0Garris) Date: Mon, Oct 11, 2004, 5:03pm
>(CDT+1) To: techassist@xxxxxxxxxxxxx Subject: [TechAssist] Re: Philips
>F8 - Vert Problem? Reply=A0to: techassist@xxxxxxxxxxxxx
>
>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: =A0 Philips 27" TV
>Model: =A0 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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