[TechAssist] Re: Fixed!! Re: 2nd tryRCA HD65W40 ATC311A2 hv leak at focus/screen control
- From: "Damon" <DamonEB@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 24 Jan 2006 19:49:40 -0500
I can't see a cap surviving the focus voltage!
Damon B
Telrad Electronics
Fort Wayne IN
----- Original Message -----
From: "Larry" <schntv@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, January 24, 2006 10:51 AM
Subject: [TechAssist] Re: Fixed!! Re: 2nd tryRCA HD65W40 ATC311A2 hv leak at
focus/screen control
> i can see no way the focus could work with a capacitor in
> series with the lead.
> is this cap mounted on the PCB?
>
>
> Dan Williams wrote:
>
> > larry,
> >
> > Yes in-series, not to ground & these wires are the ones "on" the
> > focus/screen assy
> >
> > Manufacturer says no component in series on either line. Spoke with two
> > techs from RCA, two different times, that stated the same thing. Since
it
> > is working fine now and considering the information from the
manufacturer, I
> > will run it w/out the cap installed and take my chances.
> >
> > Dan W
> > Wizard Electronics
> > wizhd@xxxxxxxxxxxxxxxx
> > ----- Original Message -----
> > From: "Larry" <schntv@xxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Tuesday, January 24, 2006 8:55 AM
> > Subject: [TechAssist] Re: Fixed!! Re: 2nd tryRCA HD65W40 ATC311A2 hv
leak at
> > focus/screen control
> >
> >
> >
> >>when you say , in line, do you mean to ground or in series?
> >>also switched wires would NOT make the focus too high, but
> >>would the screen voltage.
> >>the screen would have a capacitor, maybe you have miss
> >>identified these circuits.
> >>larry
> >>
> >>
> >>
> >>Dan Williams wrote:
> >>
> >>>OK techs, here is the "skinny" on this. A tech was at this project
before
> >>>me
> >>>and had the focus/screen control from flyback reversed for one, causing
> >>>too
> >>>much voltage on focus to pic tubes. Thus the hv leaking as stated prev.
> >>>Also
> >>>a capacitor (marked .101 12k) was inline with the focus line from
flyback
> >>>transformer.
> >>>Called RCA TECH-ASSIST and they say no components inline with focus nor
> >>>screen lines to focus/screen control assy, which I was pretty sure of
> >>>anyways, but now CONFIRMED.
> >>>
> >>>Maybe someone on the assy line screwed up?? Did this speed up the
failure
> >>>of
> >>>the hv splitter and resistors??
> >>> Anywho, unit has ran good for a full day.
> >>>Fun, Fun Fun!!!!!!
> >>>
> >>>Dan W
> >>>Wizard Electronics
> >>>wizhd@xxxxxxxxxxxxxxxx
> >>>----- Original Message -----
> >>>From: "Dan Williams" <wizhd@xxxxxxxxxxxxxxxx>
> >>>To: <techassist@xxxxxxxxxxxxx>
> >>>Sent: Monday, January 23, 2006 2:47 PM
> >>>Subject: [TechAssist] Re: 2nd tryRCA HD65W40 ATC311A2 hv leak at
> >>>focus/screen control
> >>>
> >>>
> >>>
> >>>
> >>>>O.K. I'll answer this question. NO says RCA TECH ASSIST
> >>>>I will bypass it and let u guys know how it goes!!
> >>>>
> >>>>
> >>>>Wizard Electronics
> >>>>wizhd@xxxxxxxxxxxxxxxx
> >>>>----- Original Message -----
> >>>>From: "Dan Williams" <wizhd@xxxxxxxxxxxxxxxx>
> >>>>To: <techassist@xxxxxxxxxxxxx>
> >>>>Sent: Monday, January 23, 2006 11:19 AM
> >>>>Subject: [TechAssist] Re: 2nd tryRCA HD65W40 ATC311A2 hv leak at
> >>>>focus/screen control
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>>Anyone seen a projo with a capacitor inline with screen control from
> >>>>>flyback
> >>>>>to screen/focus control assy ?????????
> >>>>>It is a ceramic cap inline, not filter.
> >>>>>
> >>>>>I am about to bypass since I've never seen one used in this manner,
but
> >>>>>don't want more problems.
> >>>>>
> >>>>>Dan W
> >>>>>Wizard Electronics
> >>>>>wizhd@xxxxxxxxxxxxxxxx
> >>>>>----- Original Message -----
> >>>>>From: "Dan Williams" <wizhd@xxxxxxxxxxxxxxxx>
> >>>>>To: <techassist@xxxxxxxxxxxxx>
> >>>>>Sent: Saturday, January 21, 2006 1:21 PM
> >>>>>Subject: [TechAssist] RCA HD65W40 ATC311A2 hv leak at focus/screen
> >>>>>control
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>RCA HD65W40 ATC311A2
> >>>>>>We found resistors R14705, R14719, R14718 open. Replaced resistors
and
> >>>>>>hv
> >>>>>>splitter # 258512
> >>>>>>Now have hv leaking somewhere around focus/screen control assy.
> >>>>>>
> >>>>>>The screen lead from flyback has a capacitor in line to the "f/s"
> >>>>>>control.
> >>>>>>IS THIS NORMAL?
> >>>>>>
> >>>>>>Another tech has been here before me so I don't know if this is
normal.
> >>>>>>
> >>>>>>Any help appreciated.
> >>>>>>
> >>>>>>Wizard Electronics
> >>>>>>wizhd@xxxxxxxxxxxxxxxx
>
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> >>
> >>--
> >>Schneider TV & Electronic Inc.
> >>5415 N. Wooster ave.
> >>Dover, Ohio 44622 www.geocities.com/schntv2000/
> >>330-343-0768 FCC. first class & Extra class K8WLY
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> --
> Schneider TV & Electronic Inc.
> 5415 N. Wooster ave.
> Dover, Ohio 44622 www.geocities.com/schntv2000/
> 330-343-0768 FCC. first class & Extra class K8WLY
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