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

  • From: "al m" <ampm@xxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Fri, 31 Jan 2003 11:42:37 -0500

Phil I know you probably checked this but is there video on the drives on
the CRT board? Your Collector voltage should be lower than 193V.
al marquardt
ampm@xxxxxxx


----- Original Message -----
From: "armando guerra" <birdie@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, January 31, 2003 11:32 AM
Subject: [TechAssist] Re: Philips Magnavox 19PR15, 19A800 chassis, video
washed out...


>
> 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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