[TechAssist] Re: Zenith C3S chassis SJ2775BG SM question
- From: "Jeff Dougherty" <jeff@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 4 Dec 2001 20:10:47 -0500
It's an older Sencore tester, beam builder, with a bunch of sockets, but it
works!
Jeff
mailto:Jeff@xxxxxxxxxxxxxxxxxx www.9-11-2001tragedy.com
FAX 1-413-280-0677
Intrepid Video & Electronics
Harrisburg, PA 17111
717-909-8844
www.intrepid-video.com www.tech-repair.net www.thetoolcaddy.com
----- Original Message -----
From: "Damon" <DAMON101@xxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, December 04, 2001 3:04 AM
Subject: [TechAssist] Re: Zenith C3S chassis SJ2775BG SM question
>
> Man, $75.00 instead of $500.00? That's a good price!
>
> Damon Brunger
> damon101@xxxxxxxxxxxxxx
> Telrad Electronic Services
> Ft Wayne, IN 46815
> ----- Original Message -----
> From: "Jeff Dougherty" <jeff@xxxxxxxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Monday, December 03, 2001 8:12 PM
> Subject: [TechAssist] Re: Zenith C3S chassis SJ2775BG SM question
>
>
> >
> > A good investment in a CRT analyzer, used!
> > I got one from E-Bay for $75.00. It saved a Zenith, I picked up and
> decided
> > to keep for myself.
> > 27" stereo set.
> >
> > Jeff
> > mailto:Jeff@xxxxxxxxxxxxxxxxxx www.9-11-2001tragedy.com
> > FAX 1-413-280-0677
> > Intrepid Video & Electronics
> > Harrisburg, PA 17111
> > 717-909-8844
> > www.intrepid-video.com www.tech-repair.net www.thetoolcaddy.com
> > ----- Original Message -----
> > From: "Damon" <DAMON101@xxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Monday, December 03, 2001 7:49 AM
> > Subject: [TechAssist] Re: Zenith C3S chassis SJ2775BG SM question
> >
> >
> > >
> > > I've recently found that some of the crts using AKB circuits like
yours
> > have
> > > been responding rather well to boosting the heater voltage. I have yet
> to
> > > know if the life of the crt is shortened somewhat or
considerably....but
> > > when the only other choice is replacement of the crt, getting a little
> > more
> > > life from an old tube may be a reasonable choice for your customer.
> > > Damon Brunger
> > > damon101@xxxxxxxxxxxxxx
> > > Telrad Electronic Services
> > > Ft Wayne, IN 46815
> > > ----- Original Message -----
> > > From: "Jon Garver" <jongar@xxxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Monday, December 03, 2001 12:20 AM
> > > Subject: [TechAssist] Re: Zenith C3S chassis SJ2775BG SM question
> > >
> > >
> > > >
> > > > My own zenith has a weak tube. Red is predominant. Since there
aren't
> > > > any adjustments, I experimented with changing the biasing of the red
> > > > drive. I don't remember which resistor I replaced off hand but I
> > replaced
> > > > it with a variable one and was able to back off the red enough that
> the
> > > picture
> > > > looks pretty decent.
> > > >
> > > > Jon Garver
> > > >
> > > >
> > > > Ron Miller wrote:
> > > >
> > > > > Tried that ,gray scale is on the green side mot much but I notice
> it.
> > > > > Ron Miller
> > > > > D.T.V. Texas
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "Ray Lufkin" <Rlufkin@xxxxxxxxxxxxxxx>
> > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > Sent: Friday, November 30, 2001 5:33 PM
> > > > > Subject: [TechAssist] Re: Zenith C3S chassis SJ2775BG SM question
> > > > >
> > > > > >
> > > > > > I may be off base here but can you adjust akb by turning the g2
> pot
> > on
> > > the
> > > > > > fly all the way off and bringing the g2 pot up very very slowly.
> Put
> > > up
> > > > > > bars, brightness at 50% contrast at 75% color at 50% and bring
up
> g2
> > > pot
> > > > > > till you just distinguish the 1st and 2nd box on bottom right.
> > > >
> > > > =================================
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