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Old 10-01-2015, 12:53 AM
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fsjonsey fsjonsey is offline
Living The Draper Ethos
 
Join Date: Jul 2006
Location: Northeast Ohio
Posts: 539
Quote:
Originally Posted by Bill R View Post
There is a 100MF electrolytic capacitor connected to the cathode (pin 4) or the 6he5 vertical output tube that is almost always bad and will cause the lack of height. It is usually located on the underside of the chassis at the front. Replace it then do the height and linearity adjustments. This will need to be right before you try to converge the set. Get the black and white picture right before you worry to much about the color. Weak tubes could be a problem for the color, but check the vertical output tube as well and be sure it is healthy.
BINGO!
Today I replaced all the ElMenco, Bumblebee, and other suspect paper caps under the chassis. I also replaced the 100uf electrolytic that feeds pin 4 of the vertical output tube that Bill R mentioned. Bill had it right. A new 100uf cap solved all the vertical issues. I now have full vertical height and good linearity. I still don't have color, despite also replacing all the tubes in the color section with NOS replacements. Where should I look next? The bad 100uf Electrolytic was a cardboard cased Sprague "Atom". Is it just my experience or are Sprague "Atoms" always bad?

Last edited by fsjonsey; 10-01-2015 at 12:59 AM.
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