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Old 03-21-2013, 11:00 AM
radio nut's Avatar
radio nut radio nut is offline
Born in the wrong decade
 
Join Date: Dec 2007
Location: Lima, Ohio
Posts: 836
A Lemon set?

My Muntz from a previous thread burned up the flyback. I have since bought one and will buy a back-up if the videokarma member can be patient with me(money is tight).
Maybe I should have known what was going on but here is what happened....

New caps and out of tolerance resistors replaced. The horizontal frequency did not have a scope picture to adjust it. the diagram said to adjust horizontal drive clockwise until the picture distorts and then turn counter clockwise a little and stop.

When I tried that The pic would not distort... the fly would squeal.

If I ran the set every day everything seemed fine. If I left it alone for a week then the set would come on with no pic and I had to turn the brightness up to see it. the crt still tests the same though, really strong.

Does this sound like a flyback or other issue? i have checked/ rechecked ALL resistors and they are still ok.
All tubes were also checked and still tested fine. Also I put in a new doorknob cap and did try subbing the horizontal circuit tubes. All of this was before the fly went POOF!

Last edited by radio nut; 03-21-2013 at 11:03 AM. Reason: added more
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