[TechAssist] Re: RCA P52151WK, Chassis PTK169BTB-red+blue won't static converge horizontal
- From: "Leonard Caillouet" <lcaillo@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 15 Nov 2005 09:48:24 -0500
Richard,
In general, there should be little or no dc offset on the convergence yokes.
Just measure at the conv yoke connectors. Some systems bias them slightly
left and right on the red and blue initially to compensate for the
horizontal linearity correction, but after alignment they should be pretty
close to zero. If you have dc of more than a hundred millivolts or so on
the yokes, you either have a leaky component or the static convergence
correction is off. The latter can be checked by looking at the input to the
output amps and centering the consumer controls in their range. The former
would not likely affect more than one channel.
Have the CRTs been removed or replaced?
Leonard Caillouet
Electronics World
1261 NW 76 Blvd
Gainesville, FL 32606
352-332-5608
352-332-5668 fax
----- Original Message -----
From: "Richard La Placa" <continentaltv@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, November 14, 2005 9:33 PM
Subject: [TechAssist] RCA P52151WK, Chassis PTK169BTB-red+blue won't static
converge horizontal
Hello all
I can't center the red&blue horizontally over the green. I tried the rings
on the crt's as well as the electronic menu. I can move both about 2 inches
with the static convergence menu but either the red can match the green or
the blue, but not both. I tried moving the green around and trying to line
them up but i am still way off horizontally .Is there a good way to check
the dc correction voltages or adjust them? The circuit wont let me disable
the electronic convergence to manually center the crts without blanking the
crts.like I can on zeniths.
TIA!!!
Richard La Placa
Continental TV
312 a Park Row
Chestertown, Md, 21620
http://www.continentaltv.homestead.com
410-778-1113 (voice & fax)
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