[TechAssist] Re: zenith RA50M84D1 convergence prob
- From: "Corey Brazell" <cohbraz@xxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 31 Jul 2002 18:51:28 -0500
Check the 110k (120k?) 1/2 watt resistor that is located in front of the
HOT. I don't remember the location number, but it is connected in series
with a 82k resistor. The resistor can cause several problems. If it
increases in value slightly, it can cause converjence problems. If it opens,
it can cause no video.
Hope this helps,
Corey Brazell
Audio Video Electronics
12169 SC Hwy 121
Newberry SC 29108
----- Original Message -----
From: "Dave Jacobson" <dave-nielsenelectric@xxxxxxxxxx>
To: "Tech Assist" <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, July 31, 2002 1:50 PM
Subject: [TechAssist] zenith RA50M84D1 convergence prob
> RA50M84D1 ZENITH bigscreen GM chassis A-line. Bowed convergence all
> colors. Can adjust with customer convergence and service adjustments.
> R4163 1 ohm resistor getting hot stks also running hot. +26vdc
> -26vdc + 16vdc coming to the convergence module (9-1690) checked
> filters on the supplies on the 9-1978 sweep board. Changed the stks on
> the convergence module with no change. Vert seems short cannot get a
> full screen with the height control when the convergence is disabled.
> Any suggestions?
>
> Dave
>
>
>
> NIELSEN ELECTRIC Wahpeton ND
>
> 701-642-8773 fax 701-642-1431
>
> dave-nielsenelectric@xxxxxxxxxx
>
>
>
>
>
>
>
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