[TechAssist] Re: Zenith C3S chassis SJ2775BG SM question
- From: "Jeff Dougherty" <jeff@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 3 Dec 2001 20:12:37 -0500
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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