[TechAssist] Re: Philips Magnavox 19PR15, 19A800 chassis, video washed out...

From: "al m" <ampm@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Date: Sun, 2 Feb 2003 14:48:30 -0500
But what supplies the output for the vertical drive for deflection?
al marquardt
ampm@xxxxxxx


----- Original Message -----
From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Sunday, February 02, 2003 2:38 PM
Subject: [TechAssist] Re: Philips Magnavox 19PR15, 19A800 chassis, video
washed out...


>
> the TDA9302H is the same circuit as the TDA8172 used most Sony TV's. (you
> can use the TDA8172 for the TDA9302). But, I Also have seen that stange
type
> problem on the B8/ B800 chassis from blank screen w/ retrace to dead. The
> chip sends feedback to the bus.
>
> Peter Oliver
> Tucson Radio TV
>
>
>
>
>
>
> From: "al m" <ampm@xxxxxxx>
> Reply-To: techassist@xxxxxxxxxxxxx
> To: <techassist@xxxxxxxxxxxxx>
> Subject: [TechAssist] Re: Philips Magnavox 19PR15, 19A800 chassis, video
> washed out...
> Date: Sun, 2 Feb 2003 11:00:17 -0500
>
>
> This caught my eye. How does it have full vertical deflection if the
> vertical IC is bad? This is interesting.
> al marquardt
> ampm@xxxxxxx
>
>
> ----- Original Message -----
> From: "Jeff Dougherty" <support@xxxxxxxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, January 31, 2003 10:38 PM
> Subject: [TechAssist] Re: Philips Magnavox 19PR15, 19A800 chassis, video
> washed out...
>
>
>  >
>  > Yes you would, Phil.
>  > If your set uses that IC number...change those parts Mando mentioned.'
>  > This one had me fooled the first time.
>  >
>  > FAX 717-564-4952
>  > Jeff Dougherty
>  > Intrepid Video & Electronics      Be careful of your thoughts.
>  > 501 Luther Rd                        They may become your words
>  > Harrisburg, PA 17111                            any moment.
>  > VCR tips, electronics info & general interest.
>  > www.intrepid-video.com www.tech-repair.net
>  > www.thetoolcaddy.com www.9-11-2001tragedy.com
>  > ***********************************************************************
>  >
>  > ----- Original Message -----
>  > From: "Philip Bader" <tjanphyl@xxxxxxxxxxxxxxx>
>  > To: <techassist@xxxxxxxxxxxxx>
>  > Sent: Friday, January 31, 2003 2:05 PM
>  > Subject: [TechAssist] Re: Philips Magnavox 19PR15, 19A800 chassis,
video
> washed
>  > out...
>  >
>  >
>  >
>  > If those parts were in fact shorted/open, I don't really think I would
>  > be getting full vert deflection, would I?
>  > Phil Bader
>  >
>  > armando guerra wrote:
>  > >
>  > > You probably have a shorted vertical IC TDA-9302H and diode D409
>  > > .Also,check R445 and R420.They are probably open.
>  > > Mando
>  > > Birdie's TV & Electronics
>  > > Casa  Grande, AZ
>  > >
>  > > Philip Bader wrote:
>  > >
>  > > > Still fighting this one.Became a "shop set". Display was totally
>  > > > black,with HV.and sound.
>  > > > Turned up G2 on fly to illuminate screen and it did,with the usual
>  > > > expected white screen and retrace lines from overdrive. But I still
> at
>  > > > least see a very faded video signal. I checked the entire CRT board
>  > > > components,all seem OK, no open resistors or shorted
transistors.The
>  > > > three 2 watt 18K resistors on CRT board feeding the outputs,
>  > > > (#3314,3324,3334) all have about +194.00V on source sides and about
>  > > > +193.00V on other sides.The screen control works. I have a full
>  > > > screen,sound,tuner operation. too faint to see if there is OSD.
>  > > > At this point I simply want to solve this.It's getting personal ;-)
>  > > > Wondering if that jungle chip(TDA8373C) is the cause.
>  > > > Phil Bader
>  > > > --
>  > > > Philip Bader
>  > > > Jan Phyl TV Inc. (estab. 1976)
>  > > > 3420 Recker Hwy. Winter Haven, Fl. 33880
>  > > > Fax (863) 299-8821
>  > > > email: tjanphyl@xxxxxxxxxxxxxxx
>  > > >
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>  > --
>  > Philip Bader
>  > Jan Phyl TV Inc. (estab. 1976)
>  > 3420 Recker Hwy. Winter Haven, Fl. 33880
>  > Fax (863) 299-8821
>  > email: tjanphyl@xxxxxxxxxxxxxxx
>  >
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References:
- [TechAssist] Re: Philips Magnavox 19PR15, 19A800 chassis, video washedout...
  - From: Peter oliver
[TechAssist] Re: Philips Magnavox 19PR15, 19A800 chassis, video washed out...

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