[TechAssist] Re: JVC PTV NU55BX4, Problem with Red. Second Request.

  • From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Tue, 21 May 2002 10:23:03 -0400

I mentiioned the picture tube because I'm sure he checked out the obvious
and was trying to help him grasp for a straw.  However it is possible the
different modes can and jack up the settings alittle and overload a weak
picture tube.  Since I can't actually see the symptom in person thats all I
have.
Phillip R Hull
phil245@xxxxxxxxxxxxx
----- Original Message -----
From: "Damon" <DAMON101@xxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, May 21, 2002 9:43 AM
Subject: [TechAssist] Re: JVC PTV NU55BX4, Problem with Red. Second Request.


>
> Since the
> > > "Cinema", "Full", and "Panorama" pictures are good and the problem
only
> > > is seen in "Regular,"
>
> The red picture occurs only in "Regular" mode, controlled by the digital
> control bus, I suspect if the unit has separate settings in the EEprom for
> Regular and Wide modes (I'll bet it does) he'll just need to adjust the
> bias/drives or it may be due to the board that controls the aspect ratio/
> recreating the video. Don't know the board name, but in either case a
> schematic/adjustment manual is absolutely necessary for this problem.
>
> You DO NOT have a bad CRT.
>
> Damon Brunger
> damon101@xxxxxxxxxxxxxx
> Telrad Electronic Services
> Ft Wayne, IN 46815
> ----- Original Message -----
> From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, May 21, 2002 8:08 AM
> Subject: [TechAssist] Re: JVC PTV NU55BX4, Problem with Red. Second
Request.
>
>
> >
> > If I understand the problem, you should check the picture tube.
> > Phillip R Hull
> > phil245@xxxxxxxxxxxxx
> > ----- Original Message -----
> > From: <gulftech@xxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Monday, May 20, 2002 5:28 PM
> > Subject: [TechAssist] JVC PTV NU55BX4, Problem with Red. Second Request.
> >
> >
> > >
> > > Friends,
> > >
> > > I sent the message (below) out about a week ago, but received no
> > > response.  Not that I blame anybody.  This is a thorn in my flesh with
a
> > > customer on my back.  So, if you have any ideas, please let me know.
> > >
> > > Thanks,
> > >
> > >
> > > Ken Smith
> > > Gulf Technical Services
> > > 3034 Gulf Breeze Parkway
> > > Gulf Breeze, FL  32563
> > > 850-934-8324 (Voice) 850-932-0819 (Fax)
> > >
> > >
> > >
> > > Techs,
> > >
> > > This unit, mfg in 1993, is (I'm sure) made by Pioneer.  Customer said
> > > color problem, then dead.  Rebuilt the power supply and resoldered
> > > hundreds of connections typical of Pioneer.  Still have a color
problem
> > > and need help on where to go.
> > >
> > > When the aspect is set to wide, the pix is nearly perfect.  When set
to
> > > regular, the video lacks red OR the red flashes over the entire
picture.
> > > After several hours of work last night, it is at the "flash" stage
now.
> > > Have never seen anything like it.  Does not respond to cold spray,
heat,
> > > or tapping.
> > >
> > > I have no print and have little idea where to go with this.  Since the
> > > "Cinema", "Full", and "Panorama" pictures are good and the problem
only
> > > is seen in "Regular," I should be able to find it.  Would greatly
> > > appreciate a hand with this one.
> > >
> > >
> > > Ken Smith
> > > Gulf Technical Services
> > > 3034 Gulf Breeze Parkway
> > > Gulf Breeze, FL  32563
> > > 850-934-8324 (Voice) 850-932-0819 (Fax)
> > >
> > > ________________________________________________________________
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