[TechAssist] Re: GE model# 09GP344 (Chassis TX808)
- From: "Gregs Email" <hungary@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 28 Jan 2002 23:59:04 -0600
This unit was manufactured in May 2000. I did flex the board and tap on the
componets while the unit was operating and found no change. I also checked
the collector of the 3 transistors on the CRT board and found between 136
and 142 volts on each. I also did a quick diode check on the diodes on the
board and found nothing unusual. Since the screen is normally blue when
video is not present, it leads me to believe that I may have a video
problem. But why is it shutting down when the screen control is turned up?
And how about those retrace lines................?
>
> I did an 09GP107 years back, not sure of the chassis...was a little 9 inch
> if I remember right.
>
> You might want to try shooting some of the 1N4001 equivalent diodes in
> there with freeze or heat, or vibrate the PCB. I got then to fail by
> grabbing its leed near the case and giving it a slight twist. If I
remember
> right, lots of GE's in that Era had these bad diodes. Must have been a
lot#
> from the Factory that escaped past QC.
>
> Steve
> Technotronic Dimensions, NY (USA)
> www.100megspop2.com/techforce
> 1-877-817-9885
>
> ----- Original Message -----
> From: "Video Clinic- Pana" <videoclinicpana@xxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, January 29, 2002 12:19 AM
> Subject: [TechAssist] Re: GE model# 09GP344 (Chassis TX808)
>
>
> >
> > or maybe just a bad blue video driver transistor. still ...check
voltage
> at
> > blue gun and compare with r/g.
> > should be 100v +-
> > ----- Original Message -----
> > From: "Video Clinic- Pana" <videoclinicpana@xxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Monday, January 28, 2002 10:37 PM
> > Subject: [TechAssist] Re: GE model# 09GP344 (Chassis TX808)
> >
> >
> > >
> > > sounds like a bad crt shorted elements i found the same thing in a
> > > pansonic today. Measure the blue input at the pix tube and compare
with
> > the
> > > red and green. blue is probably real low or 0 this causes the blue
gun
> > to
> > > be on full and will cause shut down with too much screen current .try
to
> > > clean and balance the picture ture with your rejuvnator and sometimes
> you
> > > can clear the short
> > > ----- Original Message -----
> > > From: "Gregs Email" <hungary@xxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Monday, January 28, 2002 9:14 PM
> > > Subject: [TechAssist] GE model# 09GP344 (Chassis TX808)
> > >
> > >
> > > > Hi Techs,
> > > > I have a GE model# 09GP344 (Chassis TX808) that came in the shop
this
> > > morning experiencing shutdown problems. After the power button was
> > pressed,
> > > HV was present for approx 3 sec and then shut down. During the time it
> was
> > > on, a blue raster with heavy retrace lines was present. After removing
> the
> > > cover I turned down the screen control to minimum, pressed the power
> > button
> > > again. This time the unit turned on a stayed on. With a cable signal
> > > connected, Sound was present, but the raster was still bright blue
with
> > > retrace lines. There was also no OSD, but channels and volume did
> change.
> > > Has anyone seen this before???? Thanks for the help.
> > > >
> > > > Greg Banfield
> > > > Tri-Com Communications
> > > > Platteville Wi
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