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Old 10-25-2012, 03:18 PM
miniman82's Avatar
miniman82 miniman82 is offline
First Light: 1952-2011
 
Join Date: Jun 2009
Location: Great Mills, MD
Posts: 4,159
Quote:
Originally Posted by radiotron View Post
Well the hv cage inside was coated over black flyback wax was all bubly, and coming off, and when i replaced the horz. output tube the cabinet rattled like crazy hummed (tuned it off just in time to save the picture tube!)
It's been said to you before, but I'll say it again:


you need to read some troubleshooting books on TV repair theory, because this NOT the correct way to repair faults.


Just because a flyback melted off its wax doesn't mean it's literally cooked, and a humming sound indicates nothing more than a loose part on the chassis. Sometimes it can mean there's a dead short on the secondary of the power transformer, but I always check for that before I even variac a set. Have you checked for a drive waveform at the horizontal output tube grid yet? Have you checked cathode current? Did you go through the horizontal section setup procedure in Sams? Checked B+ voltages? Ohmed out the flyback windings?

These are just a few of the things I do when servicing a set.
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