Re: Re: G07-cbo haziness

Voltage at C107 on neckboard is 184.5 DC.

For a blanking signal I'll have to search and read up
on how to test for it.

I do not have a physical g07 manual but a pdf,
although it may not be the complete manual, I'll check
it it is.

Also, just incase I didn't chase my tail I checked the
game and monitor power supply with another monitor and
it powered up and ran perfectly. Checked just in case
something may have happened to the game in the smoking
process.

--- Chris Loggans <chris@type181games.com> wrote:

> I just looked at a G07 and the other red wire is one
> labeled BH 180v on the schematics. It originates at
> the flyback, goes through a diode (it looks like
> D503)
> and ends up between the drive transistors and the
> color guns. It is directly connect to the large
> capacitor on the neck board so if you have
> everything
> back in place, I'd start by checking the voltage
> across the capacitor to see if it is still 180v. If
> not, work backwards. Check the voltage before and
> after the diode.
>
> Thanks,
> -Chris
>
>
>
> --- Dustin Holden <discuspro@yahoo.com> wrote:
>
> > Well, I must have switched the wrong wires. I now
> > realize there are two red wires that run to the
> > neckboard. When I powered on the monitor there
> was
> > instant smoking on the neckboard. Neckboard
> > resistors
> > R104 and R107 melted. So, I changed out the
> > resistors
> > and powered up the monitor. Well nothing came up
> on
> > the screen as it normally did previous to the wire
> > switch. There is normal buzzing and there is
> > glowing
> > at the tube neck when it was showing picture. B+
> is
> > at 120V. I tried to adjust the brightness but
> when
> > I
> > make the screen brighter with the screen adjust
> dial
> > below the focus dial all I see is a whitish screen
> > with zig zag lines on it. What did I just do?
> >
> > It sucks to be a beginner.
> >
> > -Dustin
> >
> >
> > --- peter jones <highwayman2000@mail.ru> wrote:
> >
> > >
> > >
> > > -----Original Message-----
> > > From: Dustin Holden <discuspro@yahoo.com>
> > > To: rasterlist@vectorlist.org
> > > Date: Sat, 12 Jan 2008 00:40:40 -0800 (PST)
> > > Subject: RASTER: G07-cbo haziness
> > >
> > > >
> > > > Having trouble trying to get the color right
> on
> > > my
> > > > g07. I changed out the three video output
> > > transistors
> > > > on the neck board X101, X102 & X103 because I
> > > cannot
> > > > seem to remove a blue intense haziness on the
> > > whole
> > > > screen. Cap kit's already been done. Not a
> > tube
> > > > problem because I tried on other tubes. Not a
> > > game
> > > > problem. I can see my games running in the
> > > > background. I can see red and most other
> colors
> > > but
> > > > they are all drowned out by blue. Where there
> > > should
> > > > be complete black it is blue. The monitor was
> > > shorted
> > > > somehow previous to my owning it so it wasn't
> > > working.
> > > > I replaced the power regulator transistor X02
> > and
> > > got
> > > > the monitor up and running.
> > > >
> > >
> > > it's probably the neckboard,
> > >
> > > before you do anything else swap the blue & red
> > > drive wires going into the neckboard,
> > > if it's still all blue you know it's the
> > neckboard.
> > >
> > > next lift & meter all resistors & capacitors in
> > the
> > > blue circuit on the neckboard.
> > >
> > >
> > >
> >
>
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> > >
> >
> >
> >
> >
> >
>
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Received on Mon Jan 14 00:29:50 2008