[TechAssist] Re: Fixed!! Re: 2nd tryRCA HD65W40 ATC311A2 hv leak at focus/screen control

  • From: Larry <schntv@xxxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Tue, 24 Jan 2006 10:51:23 -0500

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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