[TechAssist] Re: Zenith model Z25X22 board no. 9-1808 loses brightness.
- From: walter wood <wwood_38478@xxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 9 Mar 2002 09:58:42 -0800 (PST)
BOB; thanks. It appears to be the CRT.
Walter
--- bob <woodman1@xxxxxxxx> wrote:
>
>
> ----- Original Message -----
> From: bob <woodman1@xxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, March 08, 2002 4:55 PM
> Subject: Re: [TechAssist] Re: Zenith model Z25X22
> board no. 9-1808 loses
> brightness.
>
>
> > hi walter,
> > measure voltage at G1 {when dark}
> adjust, and see if voltage
> > varys.. then unplug crt socket and do same
> check..if voltages vary and
> are
> > close probably crt.. out of apr 50 "Z" line
> sets serviced here, only one
> > had bad crt and it was a 25". and the shorting
> tube also caused caused
> > transformer failure{focus/screen controls} hope
> this helps
> >
> > bob
> >
> > bobs tv.. worcester, ma
> >
> >
> > ----- Original Message -----
> > From: Premium Technologies
> <premtech@xxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Friday, March 08, 2002 4:25 PM
> > Subject: [TechAssist] Re: Zenith model Z25X22
> board no. 9-1808 loses
> > brightness.
> >
> >
> > >
> > > Hi Walter,
> > > I'd suspect the CRT, you might want to test
> that. Also take a look at
> the
> > > center gun, (green), in the neck at the point
> when it goes dark and see
> if
> > > you find some arcing going on just prior to
> failure.
> > > Hope this helps.
> > > Bill
> > >
> > > Premium Technologies
> > > Ocean Park, WA. 98640
> > > Phone: (360) 665-5984
> > > Fax: (775) 860-7747
> > > email: premtech@xxxxxxxxxxxxxx
> > > ----- Original Message -----
> > > From: "walter wood" <wwood_38478@xxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Friday, March 08, 2002 12:25 PM
> > > Subject: [TechAssist] Zenith model Z25X22
> board no. 9-1808 loses
> > brightness.
> > >
> > >
> > > >
> > > >
> > > >
> > > > >
> > > > > This set plays ok for a few minutes then
> goes
> > > > > very
> > > > > dark, just has some reddish blue
> outlines.
> > > > > When the set is working normally the
> screen (G2)
> > > > > control works.
> > > > > When it goes dark the screen control has
> no
> > > > > effect
> > > > > except to vary the focus a little.
> > > > > no ammount of beating banging or freeze
> spray
> > > > > changes it.
> > > > > I suspect the flyback.
> > > > > Does anyone have a different opinion?
> > > > > Thanks
> > > > > Walter
> > > >
> > > >
> > > > =====
> > > > Walter Wood
> > > > Future Tech Home Center
> > > > 2786 Hwy. 43 N.
> > > > Lawrenceburg Tn. 38464
> > > > 931-829-3337
> > > > Fax 931-829-4044
> > > > mailto:wwood_38478@xxxxxxxxx
> > > >
> > > >
>
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=====
Walter Wood
Future Tech Home Center
2786 Hwy. 43 N.
Lawrenceburg Tn. 38464
931-829-3337
Fax 931-829-4044
mailto:wwood_38478@xxxxxxxxx
__________________________________________________
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