[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 19:47:52 -0500

There is no cap on the screen/focus block......the previous tech was
dincking around inside, maybe using the cap for some weird test.....none
that I can think of tho'.

Hey Jim....who was that guy back in '91 that used caps to bypass
questionable circuits....he bridged over a circuit with the cap until he got
a good POW!! out of it, then ordered parts. KEN??? Na, he was the guy at
PKW...we didn't have PKW at that time....he was hired same day as I was.


Damon B
Telrad Electronics
Fort Wayne IN
----- Original Message -----
From: "Larry" <schntv@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, January 24, 2006 9:55 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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