G07-CB0 Using TV tube in place of original

owens2807

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I am using a Zenith A48ACB02X tube in place of the original RCA 19VMNP22. The picture has slightly folded corners. Otherwise it looks great. The B+ is 121v and chassis has been recapped with new flyback. Is there a modification for that problem or is it simply the tube is not compatible with this chassis? Thanks
 

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I am using a Zenith A48ACB02X tube in place of the original RCA 19VMNP22. The picture has slightly folded corners. Otherwise it looks great. The B+ is 121v and chassis has been recapped with new flyback. Is there a modification for that problem or is it simply the tube is not compatible with this chassis? Thanks

did you swap the yoke?
 
I put the yoke from the original tube onto this Zenith tube and the corners are ok now. Had to bring the yoke back further on the neck in order to get the purity out. I'll have to put in some rubber boots in there to fill the large gap. The width is too short and cannot be stretched out any further. I guess I could try replacing C515 with a higher value cap and see what that does.
 
If PP is anything like PP2, the image will NOT fill the screen horizontally. By this I mean if you run a pattern generator with a test grid and set the geometry to just fill the screen, when you hook up PP2 to it, you get black bars along the side. You can always try for more overscan with a mix of the H-width coil and H-hold but, as you may find, it only widens it so much further and you could get curl and hold issues.
 
I put the yoke from the original tube onto this Zenith tube and the corners are ok now. Had to bring the yoke back further on the neck in order to get the purity out. I'll have to put in some rubber boots in there to fill the large gap. The width is too short and cannot be stretched out any further. I guess I could try replacing C515 with a higher value cap and see what that does.

i have a width cap set on my site and use my coupon code in my signature for 25% off it that way you will have many more values then the BR kit.
 
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