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Old 07-18-2009, 08:32 AM
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compucat compucat is offline
1949 Motorola 9VT1
 
Join Date: Apr 2005
Location: Suffolk, VA
Posts: 970
Quote:
Originally Posted by Phil Nelson View Post
I agree, this is a dandy performer. I remember those rings well. Didn't seem terribly sturdy.

Mine looked terrific after I finished recapping it , except the picture was slightly tilted off level. Nearly drove me nuts. With the chassis outside the cabinet, I adjusted the yoke to level it, using a spirit level to confirm that the chassis was level on the workbench, and temporarily collapsing the vertical and holding the level against the horizontal line.

It looked perfect on the workbench, but tilted again after I put it back in the case. I even tried tilting it in the opposite direction on the workbench, then reinstalling it. After about three go-rounds, I declared victory and left it with the slight tilt.

Someone suggested that the cabinet might have become magnetized (?).

I have a cosmetically nicer one waiting in the queue. If I get around to restoring it and have the same problem, I'll know that I'm bewitched

Phil Nelson
I have noticed that screen geometry is not perfect on these sets. I too had to carefully work out a slight tilt. If you look closely at a straight line on the screen and follow it down such as slowly rolling the vertical hold, the line will bend as it goes down the screen. If you look at the schematic, these are very simple sets with no more circuitry than necessary. Therefore, I think geometry correction was sacrificed among other things for the sake of compactness. When watching program material, its imperfections are not very noticeable. I'm glad these sets are common as it makes them easier to get parts for.
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